MDCAT 2024 Ki GHALAT KEYS | Voice Of Students | Shame On UHS and SZABMU

🚨🚨 Incorrect keys of UHS

THE UHS PORTAL WILL BE OPEN FOR COMPLAINING REGARDING THE ISSUES IN THE KEY
The following were the mistakes in the key of UHS. Kindly report them:

CODE A
MCQs:

7 - SEVEN:
The answer selected by UHS is the chemical formula of chlorophyll b. However, it is not mentioned in the statement whether it is chlorophyll a or b.
(BIO Ptb, page 210, Class 11)

11 - ELEVEN:
The general formula of monosaccharides contains at least 3 to 7 carbon atoms. It should be Cn(H2O)n.
(Page 20, Bio Ptb, Class 11)

22 - TWENTY-TWO:
ADH is produced by the hypothalamus. This was not given in the options.
(Page 72, Bio Ptb, Class 12)

68 - SIXTY-EIGHT:
Chromosomes were first observed by Walther Flemming. This is out of the syllabus.
(Page 122, Bio Ptb, Class 12)

185 - ONE HUNDRED AND EIGHTY-FIVE:
Both A and B are correct. The comma used in a series or bulk of adjectives before "and" is called the Oxford comma. It is an optional comma used as per the preference of the writer.
(Wren and Martin, or any other Grammar source)

---

SZABMU OUT OF SYLLABUS / WRONG MCQs

Biology:

1. Which bones form the eye socket? (Eye socket is not in our course, only bones are included.)

2. The concentration of K+ ions inside the cell is 30 times greater than outside the neuron membrane, but the only options given were 10, 15, 20, and 25 times. The options were wrong.

3. Crossing over occurs in the pachytene stage, which is out of course (FTB).

4. Coxal bones form _____ joint. This is not written in the book.

5. Drosophila shows overdominance, which is not from Federal Biology. Only complete dominance, co-dominance, and incomplete dominance are explained.

6. Brown color is shown by which type of carbohydrates when treated with iodine? (Only red with glycogen and blue with iodine are mentioned in Federal Biology.)

7. Photorespiration is excluded from the MDCAT course.

8. Crossing over occurs in which phase? (Chapter 21 Ptb is not included in the syllabus.)

9. Which bones are involved in eye sockets? (The skeleton is not included. All options were correct.)

10. Cyanobacteria (Only size, shape, and structure of bacteria are included.)

11. Anaerobic bacteria (Only size, shape, and structure of bacteria are included.)

12. Turner’s syndrome (Chapter 20 Ptb is not included.)

13. The percentage of CO2 in anaerobic respiration is not mentioned anywhere.

14. Cyanide binds to the active site (multiple correct answers, whereas FTB states cyanide binds to the allosteric site).

15. Gallstones are composed of (not in FTB).

16. NADH transfers electrons to cytochrome-Q via _______. (Options included 4 types of phosphorylation, none of which were mentioned in FTB.)

17. The nature of surfactant in respiratory distress syndrome (not in FTB).

18. Lungs are enveloped in a double membrane called the pleura (not mentioned in FTB).

19. SA node conduction lasts 0.04 seconds. (Not in options. 0.15 seconds was given, which is the total time for conduction from the SA node to the AV node and from the AV node to the bundle of His.)

20. Kingdom Plantae (not included in the syllabus).

21. The percentage of energy produced in anaerobic respiration (the correct answer is 2%, but it’s not mentioned in FTB).

---

Chemistry:

1. Stability order of Group 4 elements: Sn+2, Pb+2, Ge+2 (Not included in the syllabus; only Groups 1 & 2 are included).

2. Partial pressure of gas (not included in the syllabus).

3. If the rate constant is for the reaction at 200°C, what will be the rate constant at 250°C? (Ea not given, and can't be calculated without a calculator.)

4. Find molarity (not included in the syllabus).

5. Find the concentration of ions if pH = 4 (Acid-bases not included in the syllabus, only buffers are).

---

Physics:

1. The best condition for maximum work in physics (statements are unclear; in expansion, work done is maximum in the isobaric process; in contraction, it is maximum in the adiabatic process, but total heat is transformed into work in the isothermal process).

[DrHamzaAshraf]

Hello Juniors. My apologies if I accidently included any such MCQ in the video which had the correct option in the official key or any such MCQ which I didn't include.
Thankyou for understanding!

KEEP SENDING MAILS AND APPLICATIONS TO YOUR RESPECTIVE UNIVERSITIES & AUTHORITIES! AESI KI TESI INKI AGAR NA GRACE MARKS DIYE

[theigcsechannel]

SIR, Meri bass hogayi hai iss mulk say- SZABMU ka test aur conducting body students ke future ko mazzak samajh rahy hai- why do they have to play with us and make a fool of ourselves? they halready have a vast syllabus and still choose to give out of syllabus questions. EVERY SINGLE OUT OF SYLLABUS QUESTION MUST BE CANCELLED AND EVERY STUDENT MUST BE GIVEN GEACE MARKS- there is an extremely simple reason why MDCAT is conducted on a provincial level- agar Sindh ka mdcat hai toh sindh ki books use hni chahiye annd same goes for szabmu agar test le toh stick to federal books- doosray board ki nooks hi use karni hoty toh issay acha national mdcar lena tha secondly, WRONG KEYS MUST BE RECTIFIED AND OUR ANSWER SHEETS MUST NOT BE CHECKED ACCORDING TO THE WRONG KEYS ISSUED LAST NIGHT! we have our years of hard work and sacrifice as stake. our parents are asking results and we have no idea what to tell them, how to tell them! SZABMU, PLEASE THINK ABOUT OUR FUTURE AND RECTIFY YOUR MISTAKES RIGHT NOW!

[extra_ordinary]

Biology:
1. Which bone forms the Eye Socket? (Eye socket is not in our course; only cartilage is included).
2. Concentration of K+ ions in the cell is 30 times greater than outside the cell membrane of neurons.(Given options were 10, 15, 20, and 25 times, all incorrect)
3. Crossing Over occurs in Pachytene stage. (Question out of course)
4. Coxal bones form joint. (Not mentioned in course/book.)
5. Brown color is shown by which type of carbohydrates when treated with iodine? (FTB only mentions red color with glycogen and blue color with iodine.)
6. A question about names of bacteria was out of syllabus/ course.
7. Scientific name of carnivorous plants (options given not mentioned in FTB).
8. Question related to cell division was included. (Cell division and its phases is not included in mdcat syllabus)
9. Covalently bonded inorganic part attached to enzyme (2 options were simultaneously correct)
10. Hexose Aldose sugar monosaccharide (two options: glucose and galactose were given, both are correct)
11. Cyanobacteria (out of syllabus, as only size shape and structure of bacteria included)
12. Anaerobic bacteria (out of syllabus, as only size shape and structure of bacteria included)
13. Percentage of CO2 in air (out of syllabus)
14. Cyanide binds to Active site (multiple correct options were given. Moreover, in FTB, cyanide binds to allosteric site)
15. Composition of gall stones (this information is nowhere to be found in FTB)
16. SA node conduction (correct answer is 0.04 sec. however it was not in the given options. Whereas option of 0.15s was given which is wrong because: It is total time for conduction to reach from SA node to AV node and from AV node to Bundle of His)
17. Kingdom Plantae (not included in syllabus)
18. The efficiency of plants in carbon fixation during photorespiration is included in the syllabus)
19. NADH transfer electrons to Cytochrome-Q via (none of the mentioned options were included in FTB)
20. Cyanide binds to Active site (multiple correct options)
21. Phenotypic and Genotypic Ratio is same (multiple correct options were given)

CHEMISTRY
1. Stability order of group 4 elements (Sn+2, Pb+2, Ge+2). (Group 4A was excluded. Only group 1A and 2A were included in course)
2. Find Molarity (not included in syllabus)
3. A question from Raoult's Law was also out of syllabus in chemistry.
4. Partial Pressure of gas (not included in the syllabus)
5. If rate constant k is 3x( 10^-9) for Reaction [A] ---> [B] at 200°C. What will be the rate constant k at 250°C. (Ea not given as well as k=A e^-Ea/RT can't be calculated without calculator)
6. Find concentration of [H]+ ions if pH=4 (Acid-Bases not included in syllabus, only buffer is included)


Please register your complaints on SZAMBU's online portal (which has been opened) by visiting their website.

[HamzaKhanafridi-xg]

* *SZABMU OUT OF SYLLABUS / WRONG MCQS*
Biology:
1. Which form eye socket? (eye socket in not in our course. Only bones are included)
2. Conc of K+ Ions in cell is 30 times greater than outside the cell memberane of neuron. The only option given was, 10, 15, 20, 25 times. The options were wrong
3. Crossing over occurs in Pachetyne stage was out of course. Ftb
4. Coxal bones form joint. This is not written in the book.
5. Drosophila shows over dominance. This is not from federal biology. As the the only types of dominance explained are complete dominance, Co dominance, and incomplete dominance.
6. Brown Colour is shown by which type of carbohydrates when they are treated with iodine. (The only two colors that are present in federal biology are red Colour with glycogen and blue color with iodine)
7. Photorespiration is excluded from Mdcat course
8. crossing over in which phase (chap 21 ptb not included in syllabus)
9. eye sockets involve which bone (skeleton not included)(iski sari options were correct)
10. cyanobacteria (only size shape and structure of bacteria included)
11. anaerobic bacteria
(only size shape and structure of bacteria included
12. turners syndrome (chap 20 ptb not included)
13. percentage of CO2 in anaerobic (not mentioned anywhere)

14. Cyanide binds to Active site (multiple correct answers whereas in FTB, cyanide binds to allosteric site)
15. Gall stones are composed of (not in ftb)
16. NADH transfer electrons to Cytochrome-Q via (Options included 4 types of phosphorylation, none mentioned in FTB)
17. Nature of Surfactant in Respiratory Distress syndrome (not in ftb)
18. Lungs are enveloped in double memrane called Pleura. (Not mentioned in ftb)
19. SA node conduction longs for 0.04 sec. (not in options, 0.15s was given which is total time for conduction to reach from SA node to AV node and from AV node to Bundle of His)
20. Kingdom Plantae (not included in syllabus)
21. Percentage of Energy produced in Anaerobic respiration (correct answer 2% but not mentioned in FTB)

Chemistry :

1. Stability order of group 4 elements
Sn+2, pb+2, Ge+2
(Not included in syllabus, only group 1 & 2 are included)

2. Partial Pressure of gas (not included in the syllabus)

3. If rate constant k is 3X 10^-9 for Reaction [A] ---> [B] at 200°C. What will be the rate constant k at 250°C. (Ea not given as well as k=A e^-Ea/RT can't be calculated without calculator)
4. Find Molarity (not included in syllabus)
5. Find conc. of [H]+ ions if pH=4 (Acid-Bases not included in syllabus, only buffer is)

*PHYSICS*

1. Best condition for maximum work in physics (statements nit clear, in expansion work done is maximum in isobaric process, in contraction, it is maximum in adiabatic, but total heat is transformed into work in Isothermal process)

[Laraib]

I was happy that test has been done the stress I had for past 8 months will now be released!! But here you go szabmu provided us the wrong keys butter on the bread they’re not uploading the booklet .. this is so unprofessional and unethical.. we did so much hard work for this day??? This day??? Ye mcat hy ya gulli dande ka khel tamasha??? Are we joke to them??? I’ve no option I am alr a repeater.. and my another year is on the risk !! Everything for them is a jokeeee!!! At least we deserve to get the correct key !! We deserve the transparency!!! Hmne 8k candi biscuit k liye nhi diye thy.. such a bloody corrupt system!! You guys are teasing the young generation.. hm na rahy tou mulk nhi chlyga .. badmashi bhi utni kro jitni brdasht kr skko.. you’ve to be transparent towards us !!! No negotiation!!!!

[usmanqazi]

It took me 6 hours to drive from Multan to Islamabad plus Hotel k stay and all that stuff.
I am too much sad, how will I face my father who had spent on me day and night.

BIG SHAME on the management of SZABMU, you ppl are stone hearted.

[abdullahmalik]

Find rate constant at 250°C if it is 3*10-⁹ at 200°C is a wrong statement.
It should be like this: find rate of reaction at 250°C if initial rate at 200°C is 3*10-⁹. Since rate of reaction doubles per 10°C rise in temperature so at 250°C it should be 15*10-⁹. We should also use some sense even if the statement is wrong we have to check the options that which option would be correct if the statement were true.
Edit. According to my key 15*10-⁹ was option D

[wasylkamran]

I WAS WAITING FIR THIS VIDEO THANK YOU SOOO MUCH!!

[MALI-smzm]

SZABMU OUT OF SYLLABUS/WRONG MCQS
Biology:
1. Which form eye socket? (eye socket in not in
our course. Only bones are included)
2. Conc of K+ lons in cell is 30 times greater than outside the cell memberane of neuron. The only option given was, 10, 15, 20, 25 times. The options were wrong
3. Crossing over occurs in Pachetyne stage was out of course. Ftb
4. Coxal bones form _ joint. This is not written
in the book.
5. Drosophila shows over dominance. This is not from federal biology. As the the only types of dominance explained are complete dominance, Co dominance, and incomplete dominance.
6. Brown Colour is shown by which type of
carbohydrates when they are treated with iodine.(The only two colors that are present in federal biology are red Colour with glycogen and blue color with iodine)
7. Photorespiration is excluded from Mdcat
8. crossing over in which phase (chap 21 ptb not included in syllabus)
9. eye sockets involve which bone (skeleton not
included)(iski sari options were correct)
10. cyanobacteria (only size shape and structure of bacteria included)
11. anaerobic bacteria
(only size shape and structure of bacteria
included
12. turners syndrome (chap 20 ptb not included)
13. percentage of CO2 in anaerobic (not
mentioned anywhere)
14. Cyanide binds to Active site (multiple correct answers whereas in FTB, cyanide binds to allosteric site)
15. Gall stones are composed of (not in ftb)
16. NADH transfer electrons to Cytochrome-Q via
——.(Options included 4 types of
phosphorylation, none mentioned in FTB)
17. Nature of Surfactant in Respiratory Distress
syndrome (not in ftb)
18. Lungs are enveloped in double memrane
called Pleura. (Not mentioned in ftb)
19. SA node conduction longs for 0.04 sec. (not
in options, 0.15s was given which is total time for
conduction to reach from SA node to AV node
and from AV node to Bundle of His)
20. Kingdom Plantae (not included in syllabus)
21. Percentage of Energy produced in Anaerobic respiration (correct answer 2% but not mentioned in FTB)
22. Which of the following is bacteria?
Not given in ftb
which chemical when in blood causes inflammation in lungs(no information about it is present on ftb)
Chemistry :
1. Stability order of group 4 elements
Sn+2, pb+2, Ge+2
(Not included in syllabus, only group 1 &2 are
included)
2. Partial Pressure of gas (not included in the
syllabus)
3. If rate constant k is 3X 10^-9 for Reaction [A]---> [B] at 200°C. What will be the rate constant k at 250°C. (Ea not given as well as k=A e^-Ea/RT can't be calculated without calculator)
4. Find Molarity (not included in syllabus)
5. Find conc. of [H]+ ions if pH=4 (Acid-Bases not
included in syllabus, only buffer is)
PHYSICS
1. Best condition for maximum work in physics(statements not clear, in expansion work done is maximum in isobaric process, in contraction, it is maximum in adiabatic, but total heat is transformed into work in Isothermal process)
These mcqs were from outside
And logical reasoning
Q1.How many players play both cricket and
football? All options were incorrect.
Q2 . All practical experiments are even" this statement is wrong then which is correct
all were correct because statement was incomplete and there was no condition given


Approximately give 30 grace marks or reconduct it




Ye complain portal par complain karen sab szambu ke website par

[WaqarAli-mbc]

Sir Please raise voice for SZABMU MDCAT students.There were a lot of Out of syllabus MCQs from Prescribed PMDC syllabus (round about 13 to 15 MCQs) .This is so unfair with us because we have to compete with UHS MDCAT students.And Furthermore Key is also wrong .And 4-5 MCQs had not correct opens means other than correct options were given.This is so unfair sir 😢😢 please raise voice for SZABMU students.

[abdulrafay]

UHS ID C
Q:143
Find de-Broglie wavelength and velocity is 106 meter per second and mass is 10 into power -30kg .
This mcq in other ID was given as
10 into power 6 meter per second
Clear misprint

[AhmedAmjad-qo]

I also marked
Cn(H20)n
Crossing over
Isotopes and their abundance.
May allah increase our marks in results.

[StudyBird-hz]

Code A

7 - SEVEN:
The answer selected by UHS is the chemical formula of chlorophyll b. However, it is not mentioned in the statement whether it is chlorophyll a or b.
(BIO Ptb, page 210, Class 11)

11 - ELEVEN:
The general formula of monosaccharides contains at least 3 to 7 carbon atoms. It should be Cn(H2O)n.
(Page 20, Bio Ptb, Class 11)

22 - TWENTY-TWO:
ADH is produced by the hypothalamus. This was not given in the options.
(Page 72, Bio Ptb, Class 12)

68 - SIXTY-EIGHT:
Chromosomes were first observed by Walther Flemming. This is out of the syllabus.
(Page 122, Bio Ptb, Class 12)

185 - ONE HUNDRED AND EIGHTY-FIVE:
Both A and B are correct. The comma used in a series or bulk of adjectives before "and" is called the Oxford comma. It is an optional comma used as per the preference of the writer.
(Wren and Martin, or any other Grammar source)

[Usman-xbju]

Analysis of SZABMU answer keys
Here’s the count of each answer choice (A, B, C, D) for all the color codes:

### **Blue:**
- **Total A’s:** 45
- **Total B’s:** 44
- **Total C’s:** 47
- **Total D’s:** 64

### **Green:**
- **Total A’s:** 44
- **Total B’s:** 44
- **Total C’s:** 45
- **Total D’s:** 67

### **Pink:**
- **Total A’s:** 48
- **Total B’s:** 44
- **Total C’s:** 43
- **Total D’s:** 65

### **White:**
- **Total A’s:** 43
- **Total B’s:** 45
- **Total C’s:** 44
- **Total D’s:** 68

### **Yellow:**
- **Total A’s:** 42
- **Total B’s:** 48
- **Total C’s:** 44
- **Total D’s:** 66

### **Summary:**
- **A’s** range between 42 and 48.
- **B’s** range between 44 and 48.
- **C’s** range between 43 and 47.
- **D’s** are consistently the highest, ranging from 64 to 68.

In conclusion, the totals for A, B, C, and D are not equal across any of the color codes, with D answers being higher in all sheets.
This shows that the answer key in every code color is different
For instant (for every code color)
A(blue)=A(pink)=A(white)etc
And so on

[ravenaespa]

*BIOLOGY PORTION* :
1. Which bone does not make a part of eye socket?
Zygomatic
Ethmoid
Sphenoid
Lacrimal
( *Not included in syllabus* )
2. Percentage of Energy produced in
Anaerobic respiration
( *Not mentioned in FTB* )
3. Crossing over occurs in whic phase of prophase?
Leptotene
B) Zygotene
Pachytene
D) Diplotene
( *Not included in syllabus* )
4. Drosophila with genotype w/ w+ has eye color. Drosophila with w+/w+ is wild and w+ /
w- is white. Tell which kind of dominance is this?
A) Codominance
B) Incomplete dominance
C) Over dominance
D) Complete dominance
( *Not in syllabus* )
5. Which of the following gives dark brown color in iodine solution.
( *There is nothing mentioned as Dark Brown color in our FTB* .)
6. Lysozymes are involved in which phase of viral replication?
A) Adsorption
B) Penetration
C) Attachment
D) Absorption
( *Out of course* )
7. Which one of the following doesn’t have quaternary structure?
A) Insulin
B) Actin
C) Myoglobin
D) Hemoglobin
( *Multiple options correct* )
8. Which joint is formed by the fusion of ileum, ischium and coxal bone?
A) all and socket
B) cartilaginous
C) synovial
D) fibrous
( *Not mentioned in FTB* )
10. Concentration of K+ ions in the cell are _ times greater outside the neuron membrane
10 times
20 times
25 times
5 times
( *Incorrect options* )
11. The inorganic part covalently bonded to an enzyme is called:
Holoenzyme
Apoenzyme
Prosthetic group
( *Incorrect statement* )
12. Gall stones are composed of:
Calcium
Calcium phosphate
Cholesterol.
( *Not in FTB* )
13. The efficiency of plants in carbon fixation during photorespiration is.
25
20
50
75
( *Not included in the syllabus* )
14. Scientific names of Carnivorous plants are *not mentioned in our book* .
15. There was a question related to the scientific names of bacteria which was not included.
16. The time delay for action potential to reach from SA to AV node is
0.15 s
0.2 s
0.3 s
0.4 s
( *The options are wrong is wrong* )

17.Which of the following is monosaccharide aldehyde hexose sugar?
And there were two correct answers...glucose and galactose both were correct
18.NADH transfer electrons to Cytochrome-Q via (Options included 4 types of phosphorylation, *none mentioned in FTB* )
19.Cyanide binds to Active site ( *multiple correct answers* )
20.turners syndrome ( *chap 20 not in syllabus* )
21.cyanobacteria ( *only size shape and structure of bacteria included* )
22.anaerobic bacteria
*(only size shape and structure of bacteria included* )
23.Which agent cause inflammation in upper respiratory tract(in FTB only inflammation from histamine was mentioned and diseases of respiratory tract were not included)

*CHEMISTRY PORTION:*
1. Fluorine molecule is diamagnetic because:
It contains paired electrons in d orbital
It contains paired electrons in p orbital
It contains unpaired electron in p
It contains unpaired in d
2. What is the order of stability of cations?
Pb⁴>Sn⁴> Ge
Ge⁴>Sn⁴>Pb⁴
( *Only group 1 and 2 were included in this chapter* )
3. If rate constant k is 3X 10^-9 for Reaction [A] ---> [B] at 200°C. What will be the rate
constant k at 250°C.
( *Ea not given as well as k=A e^-Ea/RT can't be calculated without calculator* )
4. Partial Pressure of gas from roults law
( *not included in the syllabus* )
5. Which one is not an electrochemical cell?
Voltic cell
Solar cell
Photovoltaic cell
Electrolytic cell
( *Not mentioned in syllabus* )
6. MCQ related to Molarity which was not included in the syllabus
7. Find conc. of [H]+ ions if pH=4 (Acid-Bases not included in syllabus, only buffer is included)
*PHYSICS PORTION:*
1. Best condition for maximum work
(Statements not clear, in expansion work done is maximum in isobaric process, in contraction, it
is maximum in adiabatic)
2.Half life and decay constant question in which units in question and options did not match

*Logical Reasoning:*
Statement was not proper
All particular elements are not even

[mahamfarooq]

The questions 44, 52, 54, 55, 84, 96, 97, 117, 133, 157, 167, 187, 190 their anwer in the key are wrong and seem to be shuffled with the other codes like the answers of these questions in white paper code have been shuffled with Pink and Yellow keys which are beside it. Please look into it.

[NofiaWalikhan]

My exam went very well, and I had predicted a score of over 190, but when I saw the result, I was shocked. This can't be right. My request to everyone is that if the result is corrected and grace marks are given, and they upload the paper then we will evaluate things Otherwise, if they plan to reconduct the exam, they should first admit their mistake, and only then will we agree to take the exam again.

[MisherIman]

Thank you sir for your efforts and keep praying for all of us ...we really want justice 🙏

[saadbilal]

Sir in nitration question option A has different structure i.e . Benzene have NO3 on its one carbon instead of NO2 that is mentioned in option B .. so this mcq was not vague .. but option B was correct

[ayeshajamshaid]

ID C(Paper Code C)
Biology

**MCQ-5**
The change in the frequency of alleles at a locus that occurs by chance is known as:
A. Mutation
B. Genetic Drift
C. Non-random Mating
D. Speciation
**Comment:**
This question is out of the table of specification/syllabus given by UHS, so grace marks should be given for this question to all.

**MCQ-7**
Which of the following increases variation within a gene pool?
A. Chromosome Inversion
B. Crossing Over
C. Gene Mutation
D. Random Fusion of Gametes
**Comment:**
Biology Book (Punjab Textbook) 2nd Year
- Chapter #22: Variation & Genetics, Page 184 (second paragraph)
- Chapter #29: Evolution, Page 231 (Table: Mutation Definition)
Mutation alone does not change allele frequency much. The best option is **B. Crossing Over** according to the book.



**MCQ-26**
Which of the following is correct about a chlorophyll molecule?
A. Chemical Formula C55H70O6N4Mg
B. Porphyrin Ring with N in the center
C. Methyl Group on 2nd Pyrrole Ring
D. Aldehyde Group on 2nd Pyrrole Ring
**Comment:**
PTB, Chapter #11: Bioenergetics, Page 210
- In Paper Key Code **B**, C option has been marked correct, while in others, option **A** has been marked correct, which is actually the formula of chlorophyll 'a'.
**In the statement, it's not specified whether they are asking about chlorophyll 'a' or 'b'. They have asked generally about the chlorophyll molecule. Hence, the correct option is (C), which has also been marked as correct in paper code B.



**MCQ-30**
Monosaccharides have the general formula:
A. Cₙ(H₂O)ₙ
B. Cₙ(H₂O)ₓ
C. C₂(H₂O)ₙ
D. Cₓ(H₂O)ₙ
**Comment:** PTB, 1st year, Chapter 2 (Biological Molecules), Page #20, Topic: Carbohydrates
Federal Textbook, Chapter 2 (Biological Molecules), Page #36, Monosaccharides
Hence, option A is the correct option.



**MCQ-41**
The chromosome was first observed by:
A. T.H. Morgan
B. Griffith
C. Walther
D. Mendel
**Comment:** This is out of the table of specification as given by UHS. PTB, 2nd year, Chapter 20, Page 122 (Chromosomes & DNA).
Since this chapter was not included in the syllabus, marks should be awarded.



**MCQ-114 (Chemistry)**
Atomic masses of elements depend on:
A. Atomic no.
B. No. of electrons
C. No. of isotopes & abundance
D. None of the above
**Comment:** PTB, 1st year, Chapter 1, Page #6, Average Atomic Mass
Correct option is (C).



**English**

**MCQ-18**
Words spoken in earnest will convince him:
A. A few
B. The few
C. Few
D. Fewer
**Comment:**
Both options 'A' and 'B' should be marked as correct.


**MCQ-19**
She has beauty, brains, and wealth — a rare combination.
**Comment:**
Correct option is **B** as per Oxford Dictionary. A list of three or more items makes the comma necessary.
sir plz awaaz uthain