12th Chemistry Chapter 2 Solutions MCQ Test -1
Answer: c
Explaination:
(c) 3M solution means 3 moles in 1 litre.
∴ 9 moles in 3 litre.
Answer: d
Explaination:
(d) M1V1 = M2V2
0.02 × 4 = M2 × (4 + 1)
⇒ M2 = 0.08/5 = 0.016
Answer: b
Explaination:
(b) Low atmospheric pressure will lead to low concentration of oxygen blood.
Answer: a
Explaination:
(a) CH3OH and acetone, on mixing force of attraction will decrease.
Answer: b
Explaination:
(b) Because i = 3, ∆Tb ∝ i, Boiling point ∝ ∆Tb.
Answer: c
Explaination:
(c) It will be nearly 3 times because number of particles in MgCl2 → Mg2+ + 2Cl– are thrice than glucose.
Answer: b
Explaination:
(d) Concentrated salt solution is hypertonic solution, therefore, fluids inside mango will come out and it shrivels.
Answer:
Explaination:
(a) is false because ∆Tf will depend upon nature of solvent and their Kf.
Answer:
Explaination:
(b) Higher the value of KH, lower will be solubility.
Answer: c
Explaination:
(c) van’t Hoff factor (i) does not depend upon concentration.