A. Multiple choice questions (MCQs).
Choose the correct option from the following:
1. An alloy is a
(a) metal
(c) mixture of two metals
overed by the early man ?
2. Which of the following metals was firstly discovered by
(a) Copper
(b) Iron ore
3. The change from hand-made goods to machine-made goods to known as the
(b) natural resource
(d) all of these
(c) Silver
(d) Gold
(a) Green revolution
(b) Industrial revolution
(c) White revolution
(d) Grey revolution
4. Who invented the steam engine in 1769 ?
(a) Rudolph Diesel (b) Gottlieb Daimler (C) Volta (d ) James watt
5. Mineral oil was found in
(a) Canada
(b) Russia
(d) Brazil
(d) James Watt
(C) USA
Answers
1.An alloy is a mixture of two metals.
2.copper was firstly discovered by man.
3.The change from hand made goods to man made goods to known as the Industrial revolution.
4.James watt invented the steam engine in 1769.
5.Mineral oil was found in Canada
Answer to MCQs with explanation
A) An alloy is a mixture of two metals. (Option C)
Explanation: To avoid corrosion and to strengthen the metal, an alloy is formed by combining or mixing two or more metals.
B) Copper metal was discovered first. (Option A)
Explanation: Copper was discovered in 9000 BCE and is considered as first metal ever discovered by a man.
C) The change from hand-made goods to machine-made goods is known as the industrial revolution. (Option A)
Explanation: Industrial Revolution is done from small-scale production to large-scale production by converting hand-made products to machine-made goods.
D) James Watt invented the steam engine in 1769. (Option D)
Explanation: James Watt along With Mathew Boulton instilled two steam engines with a condenser and James Watt patented it in 1669.
E) Mineral oil was found in Canada. (Option A)
Explanation: It is majorly found in Middle East regions along with Canada, the US, Africa, Latin America, and some regions of the Soviet Union.