Identify the correct statement(s) with respect to the following reaction :
Zn + 2HCl \(\longrightarrow\) ZnCl₂ + H₂
(i) Zinc is acting as an oxidant
(ii) Chlorine is acting as a reductant
(iii) Hydrogen is not acting as an oxidant
(iv) Zn is acting as a reductant

(a)

only (ii)

(b)

only (iv)

(c)

both (ii) and (iii)

(d)

both (ii) and (i)

22 g of a gas occupies 11.2 litres of volume at STP. The gas is _______________

(a)

CH₄

(b)

NO

(c)

CO

(d)

CO₂

The speed of light is 3 x 10¹⁷ nms ^-1. Which is the closest to the wavelength in nanometer of a quantum of light with frequency of 6 x 10¹⁵ s^-1?

(a)

10

(b)

25

(c)

50

(d)

75

Characteristic of transition elements is incomplete ____________

(a)

d-orbitals

(b)

f-orbitals

(c)

p-orbitals

(d)

s-orbitals

Which of the following elements were unknown at that time of Mendeleev?

(a)

Na, Mg

(b)

Fe, CO

(c)

K, Cu

(d)

Ga, Ge

Match the list I with list II and select the correct answer using the code given below

List I		List II
A	Protium	1	Radio active
B	Tritum	2	Aligned nuclear spins
C	Ortho hydrogen	3	Opposed nuclear spins
D	Para hydrogen	4	No neutron

(a)

A	B	C	D
1	3	2	4

(b)

A	B	C	D
4	1	2	3

(c)

A	B	C	D
3	1	4	2

(d)

A	B	C	D
2	1	4	3

Intramolecular H-bonding is present in _________

(a)

o-nitrophenol

(b)

salicylic acid

(c)

salicylaldlehyde

(d)

all of these

Which type of elements form interstitial hydrides?

(a)

s-block and p-block

(b)

p-block only

(c)

d-block and f-block

(d)

s-block only

Which can be used in controlling galvanic corrosion?

(a)

Iron

(b)

Magnesium

(c)

Calcium

(d)

Beryllium

Which one of the following is equal to 1 Joule?

(a)

Nm^-1

(b)

Nm^-2

(c)

Nm

(d)

kg ms^-2