Free Printable NEET AND JEE

1.

The values of electronegativity of atoms A and B are 1.20 and 4.0 respectively. The percentage of ionic character of A ? B bond is

a)

50 %

b)

55.3%

c)

40%

d)

72.24%

2.

$O_2^{2^-}$ is the symbol of __________ ion ?

a)

Hydroxide

b)

super oxide

c)

peroxide

d)

monoxide

3.

The number of electrons that are paired in oxygen molecule is

a)

7

b)

8

c)

14

d)

16

4.

When $N^2$ goes to $N^{2^+}$ , the N−N bond distance ..... and when $C_2^{ }$ goes to $O_{2^+}$ , the O−O bond distance .......

a)

Decrease, increase

b)

Increase, increase

c)

Increase, decrease

d)

None of these

5.

Which of the following contains smallest bond angle in its molecule ?

a)

$OH_2$

b)

$SH_2$

c)

$NH_3$

d)

$SO_2$

6.

The pair of species having identical shapes for molecules of both species is

a)

$XeF_{2,}Co$

b)

$BF_3\ ,\ PCl_3$

c)

$PF_5\ ,\ IF_5$

d)

$CF_4\ ,SF_4$

7.

Which One of the following species is diamagnetic in nature

a)

$He_2^+$

b)

$H_2$

c)

$H_2^+$

d)

$H^{2^-}$

8.

Which of following molecules/ion does not contain unpaired electrons ?

a)

$O_2^{2^-}$

b)

$B_2$

c)

$N_2^+$

d)

$O_2$

9.

Number of gm of oxygen in 32.2 g $Na2SO4.10H2O$

a)

20.8

b)

22.4

c)

2.24

d)

2.08

10.

Using molecular orbital theory find which of the following has the shortest wave length ?

a)

$O_2^{2^-}$

b)

$O_2^+$

c)

$O_2^-$

d)

$O_2^{2^+}$

NEET AND JEE

Total questions: 10

Worksheet time: 20mins

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