KVPY Stream-SA (Class 11) Chemistry: Questions 17 - 22 of 133

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Question number: 17

» Purification & Characteristics of Organic Compounds » Purification » Sublimation

Appeared in Year: 2009

MCQ▾

Question

A mixture of NH4Cl and NaCl can be separated by

Choices

Choice (4) Response

a.

Distillation

b.

Filtration

c.

Sublimation

d.

Decantation

Question number: 18

» Hydrocarbons » Alkanes » Mechanism of Halogenation of Alkanes

Appeared in Year: 2015

MCQ▾

Question

Reaction of 2-butene with acidic KMnO4 gives

Choices

Choice (4) Response

a.

HCOOH

b.

CH3CHO

c.

CH3COOH

d.

CH3CH2OH

Question number: 19

» Atomic Structure » Rules for Filling Electrons in Orbitals

Appeared in Year: 2010

MCQ▾

Question

Among NH 3, BCl 3, Cl 2 and N 2 t he compound that does not satisfy the octet rule is –

Choices

Choice (4) Response

a.

BCl 3

b.

Cl 2

c.

N 2

d.

NH 3

Question number: 20

» Atomic Structure » Quantum Mechanical Model of Atom

Appeared in Year: 2011

MCQ▾

Question

The set of principal (n), azimuthal (l) and magnetic (ml) quantum numbers that is not allowed for the electron in H-atom is

Choices

Choice (4) Response

a.

n = 3, l = 1, ml = –1

b.

n = 2, l = 1, ml = 0

c.

n = 3, l = 0, ml = 0

d.

n = 2, l = 2, ml = –1

Question number: 21

» Basic Concepts in Chemistry » Mole Concept

Appeared in Year: 2014

MCQ▾

Question

The volume of oxygen at STP required to burn 2.4 g of carbon completely is

Choices

Choice (4) Response

a.

8.96 L

b.

2.24 L

c.

1.12 L

d.

4.48 L

Question number: 22

» Atomic Structure » Bohr Model of Hydrogen Atom

MCQ▾

Question

According to Bohr’s theory, the electronic energy of the hydrogen atom in nth Bohr’s orbit given by En=21.76×1019z2n2J . Calculate the longest wavelength of light that will be needed to remove electrons from 3rd Bohr orbit of He+ ion.

Choices

Choice (4) Response

a.

2.06×1018J

b.

2.76×10 - 18J

c.

9.67×1019J

d.

7.79×1016J

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