Classification of Elements & Periodicity (KVPY Stream-SA (Class 11) Chemistry): Questions 1 - 5 of 6

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Question number: 1

» Classification of Elements & Periodicity » S, P, D and F Block Elements,

Appeared in Year: 2009

MCQ▾

Question

Atomic radii of alkali metals follow the order –

Choices

Choice (4) Response

a.

Cs > K > Na > Li

b.

Li > Na > K > Cs

c.

Na > K > Cs > Li

d.

K > Cs > Li > Na

Question number: 2

» Classification of Elements & Periodicity » Ionization Enthalpy

Appeared in Year: 2014

MCQ▾

Question

The first ionization enthalpies for three elements are 1314, 1680 and 2080 kJmol1 , respectively. The correct sequence of the elements is

Choices

Choice (4) Response

a.

F, Ne and O

b.

O, F, and Ne

c.

Ne, F and O

d.

F, O and Ne

Question number: 3

» Classification of Elements & Periodicity » Chemical Reactivity

Appeared in Year: 2014

MCQ▾

Question

The order of reactivity of Na,Fe,CuandCa with water is

Choices

Choice (4) Response

a.

Na > Fe > Ca > Cu

b.

Cu > Ca > Fe > Na

c.

Cu > Fe > Ca > Na

d.

Na > Ca > Fe > Cu

Question number: 4

» Classification of Elements & Periodicity » S, P, D and F Block Elements,

Appeared in Year: 2010

MCQ▾

Question

The atomic radii of the elements across the second period of the periodic table

Choices

Choice (4) Response

a.

Decrease due to increase in effective nuclear charge

b.

Increase due to increase in effective nuclear charge

c.

decrease due to increase in atomic number

d.

Decrease due to increase in atomic weights

Question number: 5

» 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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