Question # 1

Which one of the following elements has no variable valency.

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Zinc

Iron

cobalt

Manganese

The correct name of CH3-CH= CH2-OH is

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2-buten -4 -ol

3-buten-I-ol

2-Buten -I-ol

Ethylene glycol

Which is more basic

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RbOH

NaOH

KOH

Li OH

The composition mixture of clay and lime stone in the raw material.

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75% lime stone and 25% clay

25% lime stone and 75% clay

15% lime stone and 55% clay

55% lime stone and 15% clay

Which one is not property or uses of mustard gas

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Used in 1st world war

Powerful vesicant

High boiling liquid

High boiling gas

When CO₂is made to react with ethyl-magnesium iodide followed by acid hydrolysis, the product formed is

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Propane

Propanoic acid

Propanal

Propanol

Which of the following element is not present in all proteins

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Carbon

hydrogen

Nitrogen

Sulphur

First organic compound prepared in laboratory was.

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Glucose

Methane

Urea

Alcohol

The strength of binding energy of transition elements depend upon

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number of electron pairs

number of unpaired electron pairs

number of neutrons

number of protons

In which country first of all paper was invented

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USA

China

Egypt

Germany

Hydrogen resembles in properties with

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IA, IV A and VII A elements

III A, IV A and V A elements

II A, IV A and VI A elements

II A, III A and VII A elements

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

Which one of the following elements exhibits s-inert pair effect.

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B

Al

Pb

Sc

Which acid is used in the manufacture of synthetic fiber

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Formic acid

Oxalic acid

Carbonic acid

Acetic acid

Which is the least reactive of all the alkali metals

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Li

Na

K

Cs

Ammonia is prepared industrially by

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Contact process

Ostwald process

Birkland Eyed process

Heber process

Which is not an ore of iron

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haematite

Magnetite

limonite

Cassiterite

Raney Nickel is

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Nickel compound

Naturally occurring nickel

Spongy form of a nickel

Alloy of nickel

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