Question # 1

The carbon atoms in calcium carbide are held by

Choose an answer

Ionic bonds

2 sigma bonds

2 covalent one co-ordinate bond

2 π and one σ bond

Setting of cement is an

Choose an answer

Exothermic reaction

Endothermic reaction

Neither exothermic nor endothermic

None

Calcium cyanamide on treatment with steam under pressure gives NH₃ and

Choose an answer

Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

Choose an answer

1000 kg

56 kg

44 kg

100kg

In which molecule carbon atom is sp² hybridized

Choose an answer

CH₄

C₂H₄

C₂H₂

None of the above

Among the alkaline earth metals the element forming predominantly covalent compounds is

Choose an answer

Be

Mg

Sr

Calcium

Chile salt petre is

Choose an answer

NaNO₃

Na₂SO₄

KNO₃

Na₂S₂O₃

When electricity is passed through molten AI₂O₃ + Na₃AIF₆ and 13.5 gms AI are deposited,the number of faraday must be

Choose an answer

0.5

1.0

1.5

2.0

Inter molecular forces in solid hydrogen are

Choose an answer

Covalent forces

Van der Waal forces or London dispersion force

Hydrogen bonds

All of these

Which of the following statement is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C?

Choose an answer

B evaporates more readily than A

B evaporates less readily than C

A and B evaporates at the same rate

A evaporates more readily than C

Dehydration of glycerol give

Choose an answer

Propane

Propene

Acrolein

Benzene

Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

Choose an answer

Their metallic character decreases

The stability of +2 oxidation state increases

Their ionization energy increases

Their atomic size decreases

In crystal structure of sodium chloride, the arrangement of CI^-ions is

Choose an answer

Fcc

Both Fcc and bcc

Bcc

None of these

Enzymes are

Choose an answer

Proteins

Minerals

Oils

Fatty acids

Which one is primary alcohol?

Choose an answer

Buten-2-ol

Propan-2-ol

Butaon-1-ol

2, 3-Dimethylhexane-4-ol

Chile salt petre is

Choose an answer

NaNO₃

Na₂SO4

KNO₃

Na₂S₂O₃

A zero order reaction is one whose rate is independent of

Choose an answer

Temperature of the reaction

The concentration of the reactants

The concentration of the products

The material of the vessel in which the reaction is carried out

With increasing principle quantum number, the energy difference between adjacent energy levels in H atom

Choose an answer

Decreases

Increases

Remain constant

Decreses for low value of Z and increases for higher value of Z.

A current of 9.65 ampere flowing ofr 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

2 g of oxygen contains number of atoms equal to that in

Choose an answer

0.5 g of hydrogen

4 g of sulphur

7 g of nitrogen

2.3 g of sodium

Sulphure dioxide affects

Choose an answer

Cell wall

Plasmodesmata

All membrane systems

Nucleus

Which of the following is not present in RNA?

Choose an answer

Uracil

Thymine

Ribose

Phosphate

More Classes

Other Links

Chemistry General Science Test Hard 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