21.

The department of Atomic Energy was established in
A. 1948 B. 1954
C. 1963 D. 1971
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
22.

The exhaled air contains
A. carbon dioxide only B. a mixture which has more carbon dioxide than oxygen
C. a mixture of carbon dioxide, nitrogen and oxygen in which nitrogen has the highest percentage D. a mixture of carbon dioxide and nitrogen
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.
23.

Wright Brothers are regarded inventors of the
A. Balloon B. Bicycle
C. Aeroplane D. None of the above
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.
24.

World War II was fought between
A. Axis Power (Germany, Italy and Japan) against the Allies (Britain, USSR, USA, France) B. Austria, Hungary, Turkey against France, USA, Japan
C. both (a) and (b) D. None of the above
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
25.

The basic cause of World War II was
A. an unjust Treaty of Versailles B. rice of the Nazi Party in Germany
C. Japan's policy of expansion and imperialism of England and France D. All of the above
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.