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Chemistry

Chemistry
A thick paste of cement, sand and water is called

R.C.C.
Kiln
Mortar
Concrete

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Chemistry
Gelatin is mostly used in making ice–creams in order to

Enrich the aroma
Stabilise mixture
Stabilise the colloid and prevent crystallisation
Prevent making a colloid

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Chemistry
What particles move around the nucleus of an atom and are negatively charged?

Electrons
Positrons
Protons
Neutrons

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Chemistry
The heat required to raise the temperature of body by 1 K is called

None of these
specific heat
thermal capacity
water equivalent

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Chemistry
The gas used for artificial ripening of green fruit is

ethylene
ethane
acetylene
carbon dioxide

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Chemistry
Aquaregia is a mixture of the following in the ratio 1 : 3 by volume

Conc. HNO3 and conc. HCl
Dil. HCl and dil. HNO3
Conc. HCl and conc. HNO3
Conc. HNO3 and conc. H2SO4

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