Question # 1

silicones are

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Some salts of sodium

Allotropes of SI

Inorganic polymers

Coloured compounds of Si

Mark the correct statement.

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Na+ is smaller than Na atom

Na+ is large than Na atom

Cl- is smaller than Cl atom

cl- and Cl are equal in size

Stainless steel is

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Compound

An element

Mixture

100% pure iron

Which of the following lipids does not have glycerol backbone.

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Fat

Oil

Cholesterol

Phospholipid

Acetic acid is manufactured by

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distillation

fermentation

ozonalysis

esterification

Nelson's cell is used to prepare

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NaOH

Na₂CO₃

Na metal

NaCl

In a period, from left to right in the periodic table, the size of atom generally.

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Increases

decreases

Remains constant

First increase upto the middle of period and then decreases

Which one is used for manufacture of fertilizers

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Methane

Ethane

Ethene

Ethyne

Which one is neutral amino acid

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Lysine

Histidine

Glutamic acid

Valine

Which compound is least reactive

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CH3-CH3

CH2=CH2

CH=CH

C6H6

Electron affinity is measure of energy

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Required to remover the electron

Released by adding an electron

Required to excite an electron

Released by removing an electron

Which one of the following uses is not correctly related with the halogen.

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fluorine -------- Teflon

Chlorine ---------Bleaching powder

Bromine ---------------PVC plastics

Iodine -----------Iodex

Which gas act as 'Blistering agent'

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Acetylene

Phosphine

Phosgene

Mustard gas

What are the total numbers of periods in the modern periodic table.

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3

5

7

8

Which of the following compounds is used to make spray, which has fungicidal action.

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BaSO4

Na2CO3

CaO

CaSO4.2H2O

The solution of which acid is used for seasoning of food.

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Formic acid

Acetic acid

Benzoic acid

Butanoic acid

Which element burns in nitrogen atmosphere to form nitride.

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Mg

Al

Both a and b

None of these

Zymase can be used to convert glucose to

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Carbon and steam

CO2 and hydrogen

CO2 and Ethanol

Ethanol and water

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