KVPY Stream-SA (Class 11) Chemistry: Questions 96 - 101 of 133

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Question number: 96

» Equilibrium » Ionic Equilibrium » pH Scale

Appeared in Year: 2010

MCQ▾

Question

An aqueous solution of HCl has a pH of 2.0 when water is added to increase the pH to 5.0 the hydrogen ion concentration –

Choices

Choice (4) Response

a.

Decreases three-fold

b.

Remains the same

c.

Increases three-fold

d.

Decreases thousand-fold

Question number: 97

» P-Block Elements Group 13 to 18 » Group 15 » Nitrogen

Appeared in Year: 2014

MCQ▾

Question

The isoelectronic pair is

Choices

Choice (4) Response

a.

Co,N2

b.

C2,HF

c.

O2,NO

d.

F2,HCL

Question number: 98

» Hydrocarbons » Isomerism

Appeared in Year: 2009

MCQ▾

Question

among the four compounds:

  1. acetone,
  2. propanol,
  3. methyl acetate
  4. Propionic acid,

Two that are isomeric are:

Choices

Choice (4) Response

a.

Methyl acetate and propanol

b.

Propionic acid and acetone

c.

propionic acid and methyl acetate

d.

Methyl acetate and acetone

Question number: 99

» States of Matter » Gaseous State » Dalton's Law of Partial Pressure

Appeared in Year: 2011

MCQ▾

Question

Two balloons A and B containing 0.2 mole and 0.1 mole of helium at room temperature and 2.0 atm, respectively, are connected. When equilibrium is established, the final pressure of He in the system is-

Choices

Choice (4) Response

a.

1.5 atm

b.

1.0 atm

c.

0.5 atm

d.

2.0 atm

Question number: 100

» P-Block Elements Group 13 to 18 » Group 17 » Interhalogen Compounds

Appeared in Year: 2011

MCQ▾

Question

When chlorine gas is passed through an aqueous solution of KBr , the solution turns orange brown due to the formation of

Choices

Choice (4) Response

a.

HBr

b.

HCl

c.

KCl

d.

Br2

Question number: 101

» Classification of Elements & Periodicity » Ionization Enthalpy

Appeared in Year: 2014

MCQ▾

Question

The first ionization enthalpies for three elements are 14.5, 11.3 and 8.3 Jmol1 , respectively. The correct sequence of the elements is

Choices

Choice (4) Response

a.

C, N and B

b.

B, C and N

c.

N, C and B

d.

B, N and C

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