Chemistry/Chemistry MCQ Questions Set-1 Sample Test,Sample questions

Question:
 A mixture of sand and naphthalene can be separated by

1.Fractional distillation

2.Sublimation

3.Chromatography

4.Any of them


Question:
A breath test used by traffic police to check drunken driving uses ____?

1. Turmeric on filter paper

2.Silica gel coated with silver nitrate

3.potassium permanganate-sulphuric acid

4.Potassium dichromatic-sulphuric acid


Question:
Among the following the maximum covalent character is shown by the compound

(1)MgCl2
(2)FeCl2
(3)SnCl2
(4) AlCl3

1.Option 1

2.Option 2

3.Option 3

4.Option 4


Question:
Among the given nutrients milk is a poor source of

1.Calcium

2.Protein

3.Vitamin C

4.Carbohydrates


Question:
Boron cannot form which one of the following anions?

(1) BO?2
(2) BF3?6
(3) BH?4
(4) B(OH)?4

1.Option 1

2.Option 2

3.Option 3

4. Option 4


Question:
Brass gets discoloured in air because of the presence of which of the following gases in air  ?

1.Hydrogen sulphide

2.Oxygen

3.Nitrogen

4. Carbon dioxide


Question:
Cobalt - 60 is commonly used in radiation therapy because it emits

1. alpha - rays

2.beta rays

3.gamma rays

4.X - rays


Question:
Give the common name for the following compound

(CH3)2CH CH2 ? Br

1. Isobutyl bromide

2. Methyl bromide

3.Propyl bromide

4.Butyl bromide


Question:
he M.K.S. system was first introduced by

1.archimedes

2.Eienstein

3.Newton

4.Giorgi


Question:
How many electrons are there in Na+

1.1

2.10

3.11

4.12


Question:
Hydrogen bomb is based on the principle of  

1.nuclear fission

2.nuclear fusion

3.natural radioactivity

4.artificial radioactivity


Question:
Is C2 Paramagnetic or Diamagnetic?


1. Paramagnetic

2. Diamagnetic

3.Ferromagnetic

4. Cant be determined


Question:
Misch metal  is widely used in manufacture of which of the following

1.Material of car brake

2.Smoke detectors

3.Cigarette lighters

4.Emergency lights


Question:
Name the Scientist who stated that matter can be converted into energy

1.Boyle

2.Lavoisier

3.Avogadro

4.Einstein


Question:
NH3 oxidation number?

1.-1

2.1

3.0

4.-3


Question:
Permanent Hardness of water can be removed by adding

1.Bleaching powder

2.Chlorine

3.Wasshing soda

4.Potassium permanganate


Question:
Place these hydrocarbons in order of decreasing boiling point.

1. Paraffin

2. Octadecane

3. Hexane

4. Neohexane and

5. Ethane

1. Paraffin > Octadecane > Neohexane > Hexane > Ethane

2.Paraffin > Octadecane > Hexane > Neohexane > Ethane

3.Hexane > Paraffin > Octadecane > Neohexane > Ethane

4. None of the above


Question:
SI unit of equivalent conductance

1. ohm/cm

2.Siemens m2/equivalent

3.Siemens/equivalent

4.mho/cm


Question:
Silver Mirror test is given by which one of the following compounds?

1. Benzophenone

2. Acetaldehyde

3. Acetone

4. Formaldehyde

1.Only 1

2. Only 2

3.1 and 3

4.2 and 4


Question:
Temporary hardness is due to the presence of 

1.Calcium carbonate

2.calcium bicarbonate

3.magnesium sulphate

4.calcium sulphate


Question:
The absolute value of charge on electron was determined by

1.J.J.Thomson

2.R.A. Millikan

3.Rutherford

4.Chadwick


Question:
The discovery of neutron became very late because

1. it is present in nucleus

2.it is a fundamental particle

3.it does not move

4.it does not carry any charge


Question:
The electrochemical cell stops working after some time because ________

1.Electrode potential of both the electrodes becomes zero

2. One of electrodes completely vanishes

3.Electrode potential of both electrodes equalizes

4.The reaction reverses its direction


Question:
The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 at 27  Degree C is to a volume of 100 dm3
 

1.42.3 J/ mole / K

2.38.3 J/ mole / K

3.35.8 J/ mole / K

4.32.3 J/ mole / K


Question:
The enzyme that converts glucose to ethyl alcohol is 

1.Maltase

2.Zymase

3.Diastase

4.Invertase


Question:
The purest form of iron is 

1.wrought iron

2.steel

3.pig iron

4. nickel steel


Question:
The reduction potential of hydrogen half-cell will be negative if :
(1) P(H2)= 2 atm and [H+] = 2.0 M
(2) P(H2)= 1 atm and [H+] = 2.0 M
(3) P(H2)= 1 atm and [H+] = 1.0 M
(4) P(H2)= 2 atm and [H+] = 1.0 M

1.Option 1

2.Option 2

3.Option 3

4.Option 4


Question:
what is the chemical name of the compound 

Cu2CO3

1.copper (ii) carbonate

2.copper (iii) carbonate

3.copper (i) carbonate

4. copper carbonate


Question:
What is the element present in urea

1.CHO

2. CNO

3.CNH

4. CONH


Question:
What is the IUPAC name for the following compound?

 

H3C?C?C?H

1.Acetylene

2.Methyl acetylene

3.Butanol

4.Decanoic Acid


Question:
What is the oxidation number of sulfur in H2S?

1.2

2.-2

3.1

4.-1


Question:
What is the structure of IF7 ?

1.Triagonal bipyramid

2.Pentagonal bipyramid

3. Square pyramid

4.tetrahedral


Question:
What is the third most common gas found in the air we breathe ?

1.Argon

2.Neon

3.Carbondioxide

4.Hydrogen


Question:
When formaldehyde and potassium hydroxide are heated  we get 

1.Acetylene

2.Methyl alcohol

3.Methane

4. Ethyl formate


Question:
When water freezes its density

1.decreases

2.remains constant

3.increases

4. become zero


Question:
which of the following are chemical changes?

A) Cooking of Food

B) Digestion of Food

C) Freezing of water

D) Water is heated up
 

1.A & B

2.A B & C

3.C & D

4.All the above


Question:
Which of the following is a non metal that remains liquid at room temperature  ?

1.Chlorine

2. Phosphorous

3.Bromine

4.Helium


Question:
Which of the Following is an Amorphous solid?

1. Quartz Glass(Sio2)

2.Chrome Alum

3.Silicon Carbide(SiC)

4.Graphite


Question:
Which of the following is NOT a compound?

 

1.Ammonia

2.Milk

3.Sodiumchloride

4.Chalk


Question:
Which of the following reactions are exothermic?

 

1)   C + O2  ? CO22)  2Mg + O2  ? 2MgO3)  CuSO4 + 5H2O  ? CuSO4.5H2O4)  All the above

1.1

2.2

3.3

4.4


Question:
Which one of the following elements is essential for construction is nuclear reactors

1.Cobalt

2.Nickel

3.Zirconium

4.Tungsten


Question:
Which one of the following is not a mixture

1.air

2.mercury

3.milk

4.cement


Question:
Which one of the following mixture is homogeneous

1.starch and sugar

2.methanol and water

3. graphite and charcoal

4.calcium carbonate and calcium bicarbonate


Question:
Which one of the following substances does not have a melting point

1.bromine

2.sodium chloride

3.mercury

4.glass


Question:
Which pair of atoms has the highest electronegativity difference?

 

(Calciums electronegativity is 1.0

Fluorines electronegativity is 4.0

Hydrogens electronegativity is 2.2

Sodiums electronegativity is 0.93

1. F-F

2.Ca-F

3. H-F

4.Na-F


Question:
Which solution is most concentrated?

1.6 g of solute in 10 ml of solution

2.20.5 g of solute in 50 ml of solution

3.30 g of solute in 120 ml of solution

4. 2.6 g of solute in 2 ml of solution


Question:
Yellow cake  an item of smuggling across border s

1. A crude form of heroin

2.A crude form of cocaine

3. Uranium oxide

4. Unrefined gold


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