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791. According to Daltons atomic theory, the smallest particle which can exist independently is

A. an atom

B. a molecule

C. a cation

D. an anion

Explanation:

792. Salts which of the following elements provide colours to fireworks ?

A. Zinc and sulphur

B. Ptassium and mercury

C. Strontium and barium

D. Chromium and nickel

Explanation:

793. The roundworms can be removed from the intestine of the man by administering

A. enteroquinol

B. tetracycline hydrochloride

C. piperazine citrate

D. penicillin (intramuscular)

Explanation:

794. Red, yellow and blue are known as

A. primary pigments

B. primary colours

C. secondary colours

D. complementary colours

Explanation:

795. Which of the following elements is obtained from sea weeds ?

A. Argon

B. Sulphur

C. Vanadium

D. Iodine

Explanation:

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