Class 12 · General Ability Test · CBSE Board · 2022–2025

Chemistry — Class 12 General Ability Test PYQs

72 questions from this chapter, asked in 4 Class 12 exams between 2022–2025 — every question paper set included, duplicates removed.

72questions

4Class 12 exams

2022–2025years covered

1 / 4mark values asked

Questions asked per year

202514 Qs 202412 Qs 202317 Qs 202229 Qs

Practice questions first 10 of 72 — free

Q1MCQ20251 mark

Answer Logic

Which one of the following statements is NOT correct?

(A)The molecules of soap are sodium or potassium salts of long chain fatty acids

(B)The molecules of soap contain both hydrophobic and hydrophilic ends

(C)Detergents are more effective than soaps in hard water

(D)In micelles the ionic-end of the molecules is towards oil droplet while the other end faces outside✓ Correct

Q2MCQ20251 mark

Answer Logic

Which one of the following statements is correct?

(A)A neutron is formed by combination of an electron and a proton. Therefore, it is neutral

(B)The mass of an electron is about

1/2000

times that of a proton✓ Correct

(C)An isotope of cobalt is used in the treatment of goiter

(D)J. J. Thomson proposed that the nucleus of an atom contains only neutrons

Q3MCQ20251 mark

Answer Logic

Which one of the following particles in the nucleus of an atom was discovered by J. Chadwick?

(A)Electron

(B)Proton

(C)Positron

(D)Neutron✓ Correct

Q4MCQ20251 mark

Answer Logic

Which one of the following findings is NOT observed in Rutherford's Nuclear Model of Atom?

(A)There is a neutral centre in an atom called nucleus✓ Correct

(B)Nearly all the mass of an atom resides in the nucleus

(C)The electrons revolve around the nucleus in a circular path

(D)The size of a nucleus is very small as compared to the size of atom

Q5MCQ20251 mark

Answer Logic

Element X forms a chloride with the formula $XCl_{2}$ , which is a solid with high melting point. X would most likely be in the same group of periodic table as

(A)

Na

(B)

Al

(C)

Mg

✓ Correct

(D)

K

Q6MCQ20251 mark

Answer Logic

Which one of the following oxides is a neutral oxide?

(A)

CO

✓ Correct

(B)

CO_{2}

(C)

Na_{2} O

(D)

MgO

Q7MCQ20251 mark

Answer Logic

Which one of the following is also known as Dry ice in its solid form?

(A)

SiO_{2}

(B)

CO_{2}

✓ Correct

(C)

CaO

(D)

MgO

Q8MCQ20251 mark

Answer Logic

Which one of the following statements about a compound is NOT correct?

(A)A compound is a substance composed of two or more elements, chemically combined in a fixed proportion

(B)Properties of a compound are different from its constituent elements

(C)A compound is an impure substance✓ Correct

(D)The constituents of a compound can be separated only by chemical or electrochemical reactions

Q9MCQ20251 mark

Answer Logic

Match List I with List II and select the answer using the code given below the Lists :

List I (Chemical Name)	List II (Chemical Formula)
A. Washing soda	1. $CaOCl_{2}$
B. Baking soda	2. $NaHCO_{3}$
C. Bleaching powder	3. $Na_{2} CO_{3} \cdot 10 H_{2} O$
D. Gypsum	4. $CaSO_{4} \cdot 2 H_{2} O$

Code :

	A	B	C	D
(a)	4	2	1	3
(b)	4	1	2	3
(c)	3	1	2	4
(d)	3	2	1	4

(A)A-4, B-2, C-1, D-3

(B)A-4, B-1, C-2, D-3

(C)A-3, B-1, C-2, D-4

(D)A-3, B-2, C-1, D-4✓ Correct

Q10MCQ20251 mark

Answer Logic

Which one of the following nitrogen oxides may dimerize?

(A)

N_{2} O

(B)

NO_{2}

✓ Correct

(C)

N_{2} O_{3}

(D)

N_{2} O_{5}

Why practise Chemistry PYQs?

Chemistry has appeared in 4 Class 12 General Ability Test exams we track between 2022–2025, with questions worth 1, 4 marks. CBSE Board examiners consistently reuse concepts and question patterns from this topic — practising its previous year questions is the most reliable way to know exactly what to expect in your exam.

Chemistry — Class 12 General Ability Test PYQs

Questions asked per year

Practice questions first 10 of 72 — free

Why practise Chemistry PYQs?

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