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Chemistry

Chemistry
Electric bulbs are filled with :

Carbon dioxide
Oxygen
Nitrogen
Argon

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Saccharomyces cerevisiae
Escherichia coli
Bacillus subtilis
Pseudomonas putida

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Chemistry
Neoprene is a polymer of

Isoprene
Chloroprene
Isobutane
Isopentane

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Chemistry
The compound that has the least value for octane number is :

Iso-octane
2,2-dimethyl hexane
2-methyl heptane
N-heptane

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Chemistry
Which one of the following forms of phosphorus is most reactive?

Black phosphorus
Red phosphorus
Violet phosphorus
White phosphorus

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Chemistry
Which of the following can be found as pollutants in the drinking water in some parts of India? Select the correct answer using the code given below.(A) Arsenic (B) Sorbitol (C) Fluoride (D) Formaldehyde (E) Uranium

B, D and E
A, C and E
A and C
A, B, C, D and E

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