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Chemistry

Chemistry
Which of the following is not present in RNA

Ribose
Phosphate
Thymine
Uracil

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Chemistry
________ gives hardness to stainless steel.

Lead
Zinc
Carbon
Tin

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Chemistry
In addition to hydrogen, the other abundant element present on Sun’s surface is

Oxygen
Helium
Neon
Argon

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Chemistry
The lightest gas which is non-inflammable is

Hydrogen
Helium
Oxygen
Nitrogen

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Chemistry
Bauxite is an alloy of which of the following metals ?

Iron
Silver
Aluminium
Tin

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Chemistry
Which one is a soluble salt in H2O

Zn(OH)2
PbCl2
CuS
CaCl2

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