p-Block Elements Test

Result

p-Block Elements Test - 37

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Weekly Quiz Competition

Question 1
1 / -0

Consider the following sequence of conversion.

X, Y, and Z can be described as:

A
(X) Colourless (Y) Brown, paramagnetic (Z) Colourless, diamagnetic

B
(X) Brown (Y) Colourless, diamagnetic (Z) Brown, paramagnetic

C
(X) Colourless (Y) Colourless, paramagnetic (Z) Brown, diamagnetic

D
(X) Brown (Y) Brown, paramagnetic (Z) Brown, diamagnetic

Solution
Question 2
1 / -0

Which oxide of nitrogen is obtained on heating ammonium nitrate at 250^oC?

A
Nitric oxide

B
Nitrous oxide

C
Nitrogen dioxide

D
Dinitrogen tetraoxide

Solution

NH₄NO₃ N₂O + 2H2O
Question 3
1 / -0

Which of the following oxides is anhydride of nitrous acid?

A
N₂O₃

B
NO₂

C
NO

D
N₂O₄

Solution

2HNO₂ → N₂O₃+ H₂O
Question 4
1 / -0

A gas (X) is obtained when copper reacts with dilute HNO₃. The gas thus formed reacts with oxygen to give brown fumes of (Y). (Y) when dissolved in water gives an important acid (Z) and the gas (X). X, Y, and Z respectively are:

A
NO; NO₂; HNO₃

B
NO₂; NO; HNO₃

C
N₂O; NO; HNO₂

D
NO; N₂O; HNO₃

Solution

In diluted HNO₃,
Question 5
1 / -0

Complete the given equations:
(i) Cu + 8HN O₃ → 3Cu(NO₃)₂ + W + 4H₂O
(ii) 4Zn + 10HN O₃ → 4Zn(NO₃)₂ + 5H₂O + X
(iii) I₂ + 10HN O₃→ Y + 10N O₂ + 4H₂O

A
(W) 2NO₂, (X) NO, (Y) 5HIO₃

B
(W) 2NO, (X) N₂O, (Y) 2HIO₃

C
(W) N₂, (X) NO₂, (Y) HI

D
(W) NO₂, (X) NO₂, (Y) 3HI

Solution