Which metal is non toxic in nature?

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Bronze medal is made up of metals ?

A. copper,nickel B. copper, tin C. copper, silver D. copper, zinc...

Which of the following is most elastic ?

A. Steel B. Rubber C. Glass D. Sponge E. None of these...

Which of the following mixture of gases is required in gas welding?

A. Oxygen and ethylene B. Oxygen and hydrogen C. Acetylene and oxygen D. Acetylene and hydrogen...

The master gland is ?

A: Pineal B: Pituatry  C: Liver D: Thyroid...

Which of the following waves have smallest velocity in vacuum?

A. Ultraviolet B. Sound C. Infra-Red D. Micro...