KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Chemistry: Questions 101 - 105 of 133

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 133 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 150.00 or

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 8.3Equation , 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

Question number: 102

» Hydrocarbons » Preparation, Properties and Reactions

Appeared in Year: 2009

MCQ▾

Question

When calcium carbide is add to water, the gas that is evolved is –

Choices

Choice (4) Response

a.

hydrogen

b.

acetylene

c.

Carbon dioxide

d.

methane

Question number: 103

» Basic Concepts in Chemistry » Atomic and Molecular Masses

Appeared in Year: 2012

MCQ▾

Question

The weight of calcium oxide formed by burning 20 g of calcium in excess oxygen is:

Choices

Choice (4) Response

a.

56 g

b.

28 g

c.

72 g

d.

36 g

Question number: 104

» Atomic Structure » De-Broglie's Relationship

Appeared in Year: 2014

MCQ▾

Question

If the Planck’s constant h = Equation Js, the de-Broglie wavelength of a particle having momentum of Equation kg. m. s-1 will be -

Choices

Choice (4) Response

a.

0.2 Å

b.

0.02 Å

c.

0.002 Å

d.

2 Å

Question number: 105

» Atomic Structure » Shapes of S, P and D - Orbitals

MCQ▾

Question

Choose the correct statements -

(1) Designation for the orbital with the quantum number n = 3, ℓ = 1, m =-1 may be 3px or 3py

(2) Designation for the orbital with the quantum number n = 4, = 2, m =+2 may be 4dxy or 4d x2 – y2

(3) Designation for me orbital with the quantum number n = 5, = 0, m = 0 may be 5s

(4) Designation for the orbital with the quantum number n = 2, = 1, m = 0 may be 3pz

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

f Page
Sign In