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Chemistry

Chemistry
Which of these acids is not organic in origin?

Oxalic acid
Citric acid
Sulphuric acid
Lactic acid

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Chemistry
Which one of the following is a micro-element ?

Chlorine
Hydrogen
Oxygen
Nitrogen

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Chemistry
When there are two electrons in the same orbital, they have:

Same or opposite spin
Same spin
No spin
Opposite spin

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Chemistry
What is the most commonly used substance in fluorescent tubes?

Sodium vapour and neon
Sodium oxide and argon
Mercury vapour and argon
Mercury oxide and neon

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Chemistry
The gas used for artificial ripening of green fruit is

ethane
acetylene
ethylene
carbon dioxide

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Chemistry
Chernobyl disaster is the result of pollution by

Acid rain
Oil spill
Radioactive waste
Carbon dioxide

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MORE MCQ ON Chemistry

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