Question # 1

SN2 mechanism involves

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1st order kinetic

2nd order kinetic

3rd order kinetic

Zero order kinetic

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

To which class of organic compounds soap belongs.

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Ether

Ketones

Aldehyde

Salt of an organic acid

Which of the following is not a fatty acid

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

What products is formed when ethyl bromide reacts with magnesium to form Grignard's reagent.

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Pyridine

Anhydrous ether

Ethyl alcohol

Carbon tetrachloride

Which is not polymer

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Diamond

Starch

Sand

Nucleotide

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

Phenol when distilled with zinc dust gives.

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Toluene

Benzaldehyde

Benzoic acid

Benzene

Ethyl alcohol on reacting with orthoboric acid form

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Ethyl borate

Boric acid

Boron acetate

Borax

Which one of the following elements shows variable valency, can act as a catalyst and form coloured compounds.

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Carbon

Chlorine

Sulpur

Iron

Which is not used of Borax

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Softening of water

As medicine for washing eyes

As flux in metallurgical operations

To make quartz

Which one of the following has lowest first ionization energy.

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Li

Na

Rb

Cs

Synthetic rubber is made by polymerization of

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Vinylaecetate

Acetylene

Divinylacetylene

Chloroprene

Which of the following acids possess oxidizing and reducing properties.

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HCl

HNO2

HNO3

H2SO4

The main pollutant of leather tanneries in the waste water is due the salt of.

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Lead

Chromium (VI)

Copper

Chromium (III)

Acetamide is prepared by

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Heating ammonium acetate

Heating methyl cyanide

Heating ethyl acetate

The hydrolysis of methyl cyanide

Thickness of the atmosphere is

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100 km

500 km

1000 km

1500 km

The percentage of carbon in different types of iron products is in the order of

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cast iron > wrought iron > steel

wrought iron > steel > cast iron

cast iron > steel > wrought iron

cast iron = steel > wrought iron

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