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Which of the following one of the following metals is used to galvanise iron
A passenger in a moving train tosses a coin if the coin falls behind him the train must be moving with.
Distances of stars are measured in
In the Davisson - Germer experiment if the incident beam consists of electrons, then the diffracted beam consists of :
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:
The vector of disease sleeping sickness is
Which of the following one of the following metals pollutes the air of a city having big number of automobiles
A person having AB-group of blood can donate blood to a person having
Distillation at reduced pressure is used for liquids which
In the Earth, the weight of a body is max. at the
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