KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Chemistry: Questions 74 - 79 of 133

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Question number: 74

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

Appeared in Year: 2011

MCQ▾

Question

The number of P-H bond (s) inEquation , respectively, is

Choices

Choice (4) Response

a.

2, 0, 1

b.

1, 1, 1

c.

2, 0, 0

d.

2, 1, 0

Question number: 75

» Equilibrium » Ionic Equilibrium » Acid - Base Equilibria

Appeared in Year: 2012

MCQ▾

Question

The major product in the following at 25°C is:

Equation

Choices

Choice (4) Response

a.

CH3CON = CHCH3

b.

CH3CH = NCH2CH3

c.

NH3+ CH2CH3. CH3COO-

d.

CH3CONHCH2CH3

Question number: 76

» Hydrocarbons » Isomerism

Appeared in Year: 2009

MCQ▾

Question

The number of possible structural isomers of Equation 3Equation 4 is

Choices

Choice (4) Response

a.

3

b.

2

c.

4

d.

1

Question number: 77

» Hydrogen » Preparation, Properties and Uses of Hydrogen

Appeared in Year: 2014

MCQ▾

Question

If the radius of the hydrogen atom is 53 pm, the radius of the Equation ion is closest to

Choices

Choice (4) Response

a.

13 pm

b.

108 pm

c.

81 pm

d.

27 pm

Question number: 78

» Atomic Structure » Heisenberg Uncertainty Principle

Assertion-Reason▾

Assertion (Ꭺ)

If an electron is located within the range of 0.1 Å then the uncertainty in velocity is approximatelyEquation .

Equation

Reason (Ꭱ)

Trajectory (path of motion) of above electron can defined,

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question number: 79

» Chemical Bonding » Ionic and Covalent Bonds

Appeared in Year: 2009

MCQ▾

Question

The pair in which the first compound is ionic and the second compound is covalent, is-

Choices

Choice (4) Response

a.

Equation 2Equation 2

b.

Equation 2Equation 2

c.

Equation 2Equation 3Equation

d.

Equation 3Equation 3Equation 2Equation

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