Chemistry Test

Result

Chemistry Test - 22

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Weekly Quiz Competition

Question 1
1 / -0

The ionization enthalpy of hydrogen atom is 1.312 × 10^6 Jmol^−1. The energy required to excite the electron in the atom from n = 1 to n = 2 is

A

9.84 × 10^5 Jmol^−1

B

6.56 × 10^5 Jmol^−1

C

8.51 × 10^5 Jmol^−1

D

7.56 × 10^5 Jmol^−1
Question 2
1 / -0

A

0.399 V

B

−0.339 V

C

0.26 V

D

−0.26 V
Question 3
1 / -0

A

Option 1

B

Option 3

C

Option 4

D

Option 2
Question 4
1 / -0

A

Option 4

B

Option 2

C

Option 3

D

Option 1
Question 5
1 / -0

Two liquids X and Y form an ideal solution. At 300K, vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550 mm Hg. At the same temperature, if 1 mol of Y is further added to this solution, vapour pressure of the solution increases by 10 mm Hg. Vapour pressure (in mmHg) of X and Y in their pure states will be, respectively :

A

400 and 600

B

200 and 300

C

300 and 400

D

500 and 600
Question 6
1 / -0

A

0.770 V

B

-0.072 V

C

0.385 V

D

-0.270
Question 7
1 / -0

In context with the transition elements, which of the following statements is incorrect ?

A

In the highest oxidation states, the transition metal show basic character and form cationic complexes.

B

In addition to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes.

C

In the highest oxidation states of the first five transition elements (Sc to Mn), all the 4s and 3d electrons are used for bonding.

D

Once the d^5 configuration is exceeded, the tendency to involve all the 3d electrons in bonding decreases.
Question 8
1 / -0

Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives

A

o-nitrophenol

B

nitrobenzene

C

p-nitrophenol

D

2,4,6-trinitrobenzene
Question 9
1 / -0

A

17.325 mm Hg

B

15.750 mm Hg

C

16.500 mm Hg

D

17.675 mm Hg
Question 10
1 / -0

Copper crystallizes in fcc with a unit cell length of 361 pm. What is the radius of copper atom ?

A

127 pm

B

181 pm

C

157 pm

D

108 pm