(1 ) "metal" that can cut through knife
(A ) Sodium
( B ) copper
( C ) Iron
( D ) Lead
( 2 ) Sodium metal is stored in
(A ) water
( B ) Patrol
( C ) kerosene
( D ) ether
( 3 ) Suppose a piece of sodium into the water
(A ) sinks
( B ) remain buoyant
( C ) floating claimed charred
( D ) will smoke
( 4 ) What is the chemical name of baking soda
(A ) sodium carbonate
( B ) sodium bi carbonate
( C ) potassium bi carbonate
( D ) potassium carbonate
( 5 ) Why we mix Baking Soda into the flour
( A) The bread become delicious
( B ) less water used
( C ) the loaves swell
( D ) for all
Answer.
( 1 ) A
( 2 ) C
( 3 ) C
( 4 ) B
( 5 ) C
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