Question # 1

Marsh gas was the name given to

Choose an answer

Methane

Ethane

Propane

Butane

Alkyle magnesium halides are known as

Choose an answer

Simon-smith reagent

Tollen's reagent

Grignard's reagent

Barford's reagent

Cyanoform is ________ acid in nature than the chloroform. The missing word is

Choose an answer

Stronger

Weaker

Amphoteric

Neutral

A one thousand dm³sample of water contains one gram of iron (iii) ions what is the concentration in parts per million of Fe^3f(eq) in parts per million

Choose an answer

0.001

0.01

0.1

1.0

Essentialα-amino acids are those which are necessary in the diet

Which one is an essentialα-amino acids

Choose an answer

Alanine

Aspartic acid

Glycine

Tryptophan

Choose an answer

84.84 %

89.89%

81.81%

90.90%

Which of the following correctly describes the process occurring at the electrodes when molten NaCl is electrolyzed:

Choose an answer

No reaction at anode, reduction at cathode.

No reaction at cathode, oxidation at anode.

Oxidation at anodes, reduction at cathode.

Oxidation at cathode, reduction at anode.

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

Choose an answer

Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

The formula of secondary alcohol is

Choose an answer

R - OH

R - CH₂OH

R₂CHOH

R₃COH

At 25°C, the highest osmotic pressure is exhibited by 0.1 M solution of

Choose an answer

CaCl₂

KCl

Glucose

Urea

Purification of an impure copper is made by electrolytic cell, in which impure copper is anode and pure copper is cathode, and the electrolyte used is

Choose an answer

H₂SO₄

CuSO₄

ZnSO₄

Na₂SO₄

The oxidation number of Ni in [Ni(CO)₄] is

Choose an answer

+1

0

+4

-4

Grignard's reagent on treatment with dry CO₂and HCI yields

Choose an answer

Ester

Alcohol

Carboxylic acid

Aldehyde

Acetic acids react with PCI5 giving:

Choose an answer

Acetamide

Acetyl chloride

Alcohol

Ether

The energy required to break one mole of bonds to form neutral atoms is called

Choose an answer

Bond length

Bond strength

Bond energy

None of these

Which of the following is not a property of cathode rays

Choose an answer

They can produce x-rays when they strike a heavy metal anode

They can cause reduction reaction

They produce fluorescence in rare earth and minerals

They comprise neutral particles

The ionic product of H⁺ions and OH^-in water is called ionization constant of water Kw. The value of Kw at 25°C is

Choose an answer

0.11 x 10^-14

0.30 x 10^-14

1.0 x 10^-14

3 x 10^-14

Which of the following form normal oxide

Choose an answer

K

Li

Na

None

The conversion of chemical energy into electrical energy requires :

Choose an answer

Electrolytic cell

Galvanic cell

Voltaic cell

Both (b) and (c)

The metal with highest electrical resistance at room temperature is

Choose an answer

Pb

Te

Po

Fe

The color of Cr³⁺ion is

Choose an answer

Violet

Blue

Pink

Green

Which of the following is a molecular diseases?

Choose an answer

Allergy

Cancer

German measles

Sickle cell anemia

The major portion of natural gas is

Choose an answer

Ethane

Propane

Butane

Methane

Silver oxide battery has a voltage of

Choose an answer

2.0 V

1.5 V

2.5 V

1.0 V

Burning of fossil fuels is the main source of pollution

Choose an answer

Nitrogen oxide

Nitric oxide

Nitrous oxide

Sulphur dioxide

Which statement is true for Na and Na⁺

Choose an answer

Size of Na is smaller than Na⁺

Size of Na is greater than Na⁺

Both have same properties.

Both have equal sizes.

The galvanic or voltaic cells which are rechargeable called as

Choose an answer

Primary cells

Secondary cells

Dry cells

Infinite cells

Acetone is oxidized with

Choose an answer

Tollen's reagent

Fehling solution

Acidic dichromate solution

Benedicts solution

Which of the following fertilizers is useful for paddy rice

Choose an answer

Ammonium nitrate

Ammonium sulphate

Urea

Ammonium chloride

A compound of the formula C₄H₁₀O_{reacts with sodium and undergoes oxidation to give a carbonyl compound which does not reduce Tollen's reagent, the original compound is}

Choose an answer

Diethyl ether

n-Butyl alcohol

Isobutyl alcohol

sec-Butyl alcohol

Choose an answer

1, 5-pentadiene

Penta-1, 4-diene

1, 1-pentadiene

1, 4-pentene

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