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Chemistry

Chemistry
Which of the following is not present in RNA

Uracil
Phosphate
Thymine
Ribose

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Chemistry
Charcoal is used in water treatment as a/an

Absorbent
Solvent
Coagulant
Adsorbent

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Chemistry
The presence of ozone in the stratosphere is responsible for

Higher rate of photosynthesis
Increasing the average global temperature in recent years
Supplying oxygen for people travelling in jets
Checking the penetration of ultra-violet rays to the earth

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Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

92
96
89
86

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Chemistry
An acid having basicity one is

Sodium dihydrogen phosphate
Disodium hydrogen phosphate
Sodium phosphate
Phosphoric acid

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Chemistry
Food cans are coated with tin and not with zinc because

Zinc is less reactive than tin
Zinc has a higher melting point than tin
Zinc is costlier than tin
Zinc is more reactive than tin

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