Question # 1

Water soluble component of starch is

Choose an answer

Amylose

Amylopectin

Both

Cellulose

Which one of the following is not true of metallic bonding?

Choose an answer

it gives rise to excellent electrical conductivity

electrons are following to move throughout the structure

the strength of metallic bonds increases down a group

the strength of metallic bonding affects the boiling point of metals

The amount of Si in the lithosphere is about

Choose an answer

27.72%

30.35%

35.30%

40.21%

Amorphous solids

Choose an answer

have sharp melting points

undergo clean cleavage when cut with knife

have perfect arrangement of atoms

can possesses small regions of orderly arrangements of atoms

During the manufacturing process of cement the temperature of the decomposition zone goes up to:

Choose an answer

600°C

800°C

1000°C

1200°C

An excellent source of energy without causing pollution is

Choose an answer

Fossil fuel

Sun

Petroleum

Nuclear reactor

The mass of 8.5 dm³of oxygen gas at 0.0821 atm and -1°C is

Choose an answer

100 g

10 g

1 g

0.1 g

Benzene in the presence of AICl3 produces acetophenone when reacts with

Choose an answer

AcetyI chloride

EthyI benzene

Acetic acid

Ethanoic acic

Image a man is sitting in a room. The room is closed from all sides, no entry no exit of any gas. If the room expands suddenly then:

Choose an answer

he will be frightened

he will feel cool

his blood pressure will decrease

he will feel warmth

The minimum temperature recorded by Kelvin scale is:

Choose an answer

273K

373K

Absolute scale is unable

0K to record this temperature

Which of the following factors is not used to determine the quality of water

Choose an answer

COD

BOD

DO

Available chlorine

The tip of the funnel should touch the side of the beaker in order to avoid

Choose an answer

Splashing

Leakage

Mixing

Contamination

Titanium is used as a catalyst in

Choose an answer

Hydrogenation

Dehydrogenation

Polymerization of P.E.

Oxidation of ammonia

Carboxylic acid can generally be prepared by various methods. Which of the following methods is not suitable for making carboxylic acids

Choose an answer

By the oxidation of primary alcohols

By the hydrolysis of nitriles

By the carbonation of Grignard, reagent

By the hydrolysis of p-amines

The osmotic pressure of 1 m solution at 27°C is

Choose an answer

2.46 atm

24.6 atm

1.21 atm

12.1 atm

Which of the following statements is correct?

Choose an answer

Phenol is less acidic than ethyl alcohol

Phenol is more acidic than ethanol

Phenol is more acidic than carbonic acid

Phenol is more acidic than CH₃COOH

Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because

Choose an answer

NO₂makes the electron rich ring at ortho and para positions

NO₂withdraws electrons at metaposition

NO₂donate electrons at m-position

NO₂withdraws electrons at ortho and para position

The structure of complex hydrides is

Choose an answer

Tetrahedal

Trigonal

Octahedral

Square planar

Poly hydroxyl compounds of aldehyde ketones are:

Choose an answer

Carbohydrates

Protiens

Fats

Lipids

The carbon of a carbonyl group is:

Choose an answer

sp hybridized

sp²hybridized

sp³Hybidized

None of these

Rosenmund's reduction of an acyl chloride gives

Choose an answer

An aldehydes

An alcohol

An ester

A hydrocarbon

Hybridized in carbon is:

Choose an answer

sp

sp²

sp³

d²sp

More Classes

Other Links

Chemistry General Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer