ANSWER : B
ANSWER : D
ANSWER : D
ANSWER : D
ANSWER : B
ANSWER : C
ANSWER : A
An electrical charge triggered by automobile impact causes sodium azide to explode and convert to nitrogen gas inside the airbag. Sodium azide is used as a chemical preservative in hospitals and laboratories.
ANSWER : C
the process of applying a protective zinc coating to iron or steel, to prevent rusting. The most common method is hot dip galvanizing, in which steel sections are submerged in a bath of molten zinc.
ANSWER : B
The weight of an object is minimum when it is placed at the centre of the earth because when an object is in the centre, experiences gravitational pull from all directions & the weight of an object maximum on earth is on the poles.
ANSWER : A
ANSWER : B
ANSWER : B
ANSWER : A
ANSWER : B
ANSWER : A
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