Which of the following does not form a pentachloride?

1

(a)

P

(b)

As

(c)

Sb

(d)

N

Which of the following on heating does not give nitrogen gas?

1

(a)

NH₄NO₃

(b)

NH₄NO₂

(c)

Ba(N₃)₂

(d)

(NH₄)2Cr₂O₇

The element which forms oxides in all oxidation states +I to +V is

1

(a)

N

(b)

P

(c)

As

(d)

Sb

Which of the following elements is kept in water?

1

(a)

White P

(b)

Na

(c)

S

(d)

Si

For H₃PO₃ and H₃PO₄, the correct choice is 

1

(a)

H₃PO₃ is dibasic and reducing

(b)

H₃PO₄ is dibasic and non-reducing

(c)

H₃PO₄ is tribasic and reducing

(d)

H₃PO₃ is tribasic and non-reducing

Write one chemical reaction to show that chlorine gas can be obtained from bleaching powder.

1

(a)

CaOCL₂ + 2HCl \(\rightarrow\) CaCl₂ + H₂O + Cl₂

Write one chemical reaction equation to show that conc. H₂SO₄ is a strong oxidising agent.

1

(a)

C + 2H₂SO₄(conc.)   \(\rightarrow\)  CO₂ + 2H₂O + 2SO₂