Question # 1

The nature of the positive rays depend on

Choose an answer

The nature of the electrode

The nature of the discharge tube

The nature of the residual gas

All of the above

Which is the polymer that has amide linkage in its structure

Choose an answer

PVC

Poly ethene

Polyester

Nylon

Which statement in not correct about alcohol?

Choose an answer

Ethyl alcohol is heavier than water

Ethyl alcohol ecaporates more quickly

Alcohol with less number of carbon atoms is more soluble in water than alcohol with more number of carbons atoms

Alcohol produces H₂by reaction with sodium metal

Estimation of Na in sea water is an example of

Choose an answer

Numerical analysis

Qualitative analysis

Quantitative analysis

None of above

The value of SHE is cathode and anode is always taken to be

Choose an answer

One

Zero

Different

Same

The shape of methanol, ammonia and water molecule can be explained by assuming

Choose an answer

Sp³hybridization

Sp²hybridization

Sp hybridization

All of these

Which is used to identify Cu²⁺ions

Choose an answer

Nitric acid

Sulfuric acid

NaOH

HCI

______ gives peroxide

Choose an answer

Li

Ba

Sr

Be

A salt producing hydrocarbon among these compounds is

Choose an answer

Ehyne

Ethene

Methane

Ethane

The state of hybridization of carbon atom in methane is

Choose an answer

sp³

sp²

sp

dsp²

A current of 9.65 ampere flowing for 10 minutes deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is

Choose an answer

10

50

30

96.5

Francium is an element at the bottom of Group I in the Periodic Table. Which one of the following predication is likely to be correct?

Choose an answer

It will react with water to liberate oxygen

Its hydroxide will be a strong alkali in water

Its carbonate will decompose on heating to give carbon dioxide

Its nitrate on heating will give nitrogen dioxide and oxygen

Electrolytes in the form of solution or in the fused state have the ability to conduct :

Choose an answer

Light.

Electricity.

Ions.

Electrons.

Half life period of a first order reaction is independent of:

Choose an answer

Presence of catalyst.

Conditions of temperature

Initial concentration of the compound

All of above

The total number of rare earth elements is

Choose an answer

8

32

14

10

Mass spectrometer measures the

Choose an answer

Exact mass of an element

Average mass of an element

The number of elements present in a molecule

m/e value of a positive ion

Each vertical column of the periodic table includes elements with chemical characteristics that are in general

Choose an answer

Identical

Similar

Different

Similar as well as different

The total number of inner transition elements in the periodic table is

Choose an answer

10

14

28

30

Plastics are pollution problem because many plastics:

Choose an answer

Are made from petroleleum

Are very inflammable

Burn to produce toxic funes

Decompose to produce toxic products

K,Ca and Li metals may be arranged in decreasing order of their reduction potential as :

Choose an answer

Li, k, Ca

Ca, K, Li

Li, Ca, K

K, Ca, Li

Which bond is most stable

Choose an answer

C - Cl

C - F

C - Br

C - I

Number of moles of the solute dissolved per dm³of the solution is knows as

Choose an answer

Molarity

Formality

%age

None of these

During reaction of O₂and alkenes, a product:

Choose an answer

Glycol

Epxide

Halohydrin

Ethylene glycol

The total number of transition elements is:

Choose an answer

10

14

40

50

Solvent extraction is an unstable, Process and it is called by:

Choose an answer

The amount of solute

Distribution law

The amount of solvent used

Law of mass action

What is chrome yellow?

Choose an answer

Pbo

Pb₂O

PbCrO₄

Pb₃O₄

A cell constant is generally found by measuring the conductivity of aqueous solution of

Choose an answer

BaCl₂

KCl

NaCl

MgCl₂

Two H-atom combine to form a strong H₂molecule due to

Choose an answer

Increase in potential energy

Decrease in potential energy

Energy remains unchanged

Distance is increased

The empirical formula of a compound is CH₂O. What may be the compound

Choose an answer

C₂H₅OH

C₆H₅OH

HCOOH

Which is not a colligative property?

Choose an answer

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

The substance added in the paints for improving the mechanical properties is called

Choose an answer

Pigment

Filter

Stabilizer

Binder

More Classes

Other Links

ECAT Chemistry Online Test 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

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