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Chemistry

Chemistry
Supersonic jet causes pollution by thinning of

O 2 layer
SO2 layer
CO2 layer
O3 layer

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Chemistry
Which of the following partial miscible liquid pairs has both lower and upper critical solution temperature

Aniline and n-hexane
Water and Phenol
Glycerine and m-toluene
Water and diethyl aniline

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Chemistry
Which of the following has the highest lattice energy

NaF
RbF
CsF
KF

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Chemistry
The high reactivity of fluorine is due to

strong F - F bond
small size of fluorine atom
availability of d-orbitals
its high electro negativity

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Chemistry
Which of the following is used as non-stick coating for cooking utensils?

Polystyrene
Teflon
Styrofoam
Perspex

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Carbon dioxide
Hydrogen
Nitrogen
Oxygen

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