Manganese is used in ______.

(a)

Storage batteries

(b)

Steel Making

(c)

Copper smelting

(d)

Petroleum Refining

The most important constituents of petroleum are hydrogen and ____________.

(a)

Oxygen

(b)

Water

(c)

Carbon

(d)

Nitrogen

The first Jute mill of India was established at ____________.

(a)

Kolkata

(b)

Mumbai

(c)

Ahmedabad

(d)

Baroda

The most abundant source of energy is ____________.

(a)

Bio mass

(b)

Sun

(c)

Coal

(d)

Oil

The nucleus for the development of the Chotanagpur plateau region is

(a)

Transport

(b)

Mineral Deposits

(c)

Large demand

(d)

Power Availability