Question # 1

Which one of the following is an appropriate indication of positive iodoform test?

Choose an answer

Formation of H2O

Brick red precipitate

Release of H2 gas

Yellow precipitate

Gases are good conductor of electricity at

Choose an answer

Low temperature

Low pressure

High pressure

Low temperature and high pressure

The relative rates of diffusion of a gas (Mol.wt.=98) as compared to hydrogen will be

Choose an answer

1/7

1/5

1/4

1

The destruction of the biological nature and activity of proteins by heat or chemical agent is called:

Choose an answer

Dehydration

Oxidation

Denaturation

Polymerization

How many isotopes are present in palladium

Choose an answer

Two

Four

Six

nine

Transformation is a cyclic process in which used plactic is

Choose an answer

Remelted and styrene is added

Converted into low quality substance

Converted back into original components

None of these

An acid that exists as a cyclic dimer in benzene and shows a molar mass of 120g/mol is

Choose an answer

СН3СOOH

HCOOH

CI2CHCOOH

Сl3CCOOH

The value of oxidation number of chlorine in HCIOs is

Choose an answer

+7

+5

-1

+3

Amylum is another name of

Choose an answer

Starch

Amylose

Amylopectin

Cellulose

Palmitic acid & steanic acid are obtained from process of fats & oils:

Choose an answer

Reducing

Neutralization

Oxidation

Hydrolysis

The attracted forces which are created due to repulsion of electronic cloud of the molecules are:

Choose an answer

ion-dipole forces

dipole-dipole forces

dipoles-induced dipole forces

instantaneous dipole-induced dipole

Major fertilizers with micro-nutrients are:

Choose an answer

Nitrogeneous

Phosphalic

Potash

All of these

In which of the following pairs, the numbers of electrons in the outermost shell are different?

Choose an answer

As,Sb

Ge,Sn

In,pt

Se,Te

The sp²hybird orbitals are oriented in space at one angle

Choose an answer

180°

109.5°

100°

120°

Cannizzaro reaction is not given by

Choose an answer

Trimethyl acetaldehyde

Acetaldehyde

Benzaldehyde

Formaldehyde

The third line of the Balmer series, in the emission spectrum of the hydrogen atom,is due to the transition from the

Choose an answer

Fourth Bohr orbit to the first Bohr orbit

Fifth Bohr orbit to the second Bohr orbit

Sixth Bohr orbit to the third Bohr orbit

Seventh Bohr orbit to the third Bohr orbit

The net heat change in chemical reaction is same whether it is brought in two or more different ways in one or several steps. it is known as

Choose an answer

Henry's law

Joule's principle

Hess's law

Law of conservation of energy

In a solution of CuSO₄how much time will be required to precipitate 2g copper by 0.5 ampere current?

Choose an answer

12157.48 sec

102 sec

510 sec

642 sec

Which statement about an atom is true ?

Choose an answer

The number of neutrons is not equal to number of electrons

Mass number is less than atomic number

All the elements have only one mass number

Mass number can be equal to atomic number

Metals which are above SHE in electrochemical series

Choose an answer

Can liberate H₂from acid

Cannot liberate H₂from acid

Cannot always liberate H₂from acid

None of these

In physical and chemical properties, transition elements show

Choose an answer

Similarities

Dissimilarities

Both of these

Somestimes similarities, sometimes dissimilarities

Gammexane is

Choose an answer

Chlorobenzene

Benzyl chloride

Brommobenzene

Benzene hexachloride

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