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Chemistry

Chemistry
Of the following commonly used materials, the one that is not an alloy is

Brass
Bronze
Copper
Steel

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Chemistry
Which of the following is an antidiabatic drug?

Penicillin
Aspirin
Chloroquine
Insulin

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Chemistry
Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of

Closed system
Open system
Isobaric system
Isothermal system

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Chemistry
The mineral containing both magnesium and calcium is

calcite
carnallite
dolomite
magnesite

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Chemistry
Which one of the following species has the highest bond order, shortest bond length and maximum bond strength

O-2
O2
O-22
O+2

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Chemistry
The inherited traits of an organism are controlled by

enzymes
RNA molecules
DNA molecules
nucleotides

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