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731. One horse power is equal to
A. 736 watts
B. 746 watts
C. 748 watts
D. 756 watts
Explanation:
732. Which of the following gases is not known as green house gas?
A. Carbon dioxide
B. Methane
C. Nitrous oxide
D. Chlorofluorocarbons
Explanation:
733. Graphite and sillimanite are
A. Refractory minerals
B. Ferrous minerals
C. Base minerals
D. None of these
Explanation:
734. Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : A bell ringing in an evacuated jar cannot be heard. 2. Reason (R) : Sound waves in a gas are longitudinal.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Explanation:
735. Bell metal is an alloy of
A. brass and nickel
B. zinc and copper
C. tin and copper
D. nickel and copper
Explanation:
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