More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Chile salt petre is
Choose an answer
NaNO
3
Na
2
SO
4
KNO
3
Na
2
S
2
O
3
Previous
Skip
Next
Question # 2
Which of the following transition metal ions will have definite value of magnetic moment?
Choose an answer
Sc
3+
Ti
3+
Cu
+
Zn
2+
Previous
Skip
Next
Question # 3
The number of atoms contained in 11.2 L of SO
2
at S.T.P are
Choose an answer
3/2 x 6.02 x 10
23
2 x 6.02 x 10
23
6.02 x 10
23
4 x 6.02 x 10
23
Previous
Skip
Next
Question # 4
Which of the following cannot be produced by acidic dehydration of alcohols?
Choose an answer
Ethers
Aldehyde
Alkyl Hydrogen sulphate
Alkene
Previous
Skip
Next
Question # 5
Which is the most volatile compound?
Choose an answer
HI
HCI
HBr
HF
Previous
Skip
Next
Question # 6
Sodium thiosulfate is used in photography because of its
Choose an answer
Oxidizing behaviour
Reducing behaviour
Complexing behaviour
Photochemical behaviour
Previous
Skip
Next
Question # 7
Which of the following process is used to separate insoluble particles from liquids?
Choose an answer
Separation
Filtration
Crystallization
Condensation
Previous
Skip
Next
Question # 8
The credit of discovering neutron goes to
Choose an answer
Rutherford
Langmuir
Chadwick
Austen
Previous
Skip
Next
Question # 9
Heating a micture of sodium benzoate and soda lime gives
Choose an answer
Benzene
Methane
Sodium benzoate
Calcium benzoate
Previous
Skip
Next
Question # 10
1-Chloropropane has two isomers It is an example of
Choose an answer
Chain isomerism
Position isomerism
Functional group isomerism
Metamerism
Previous
Skip
Next
Question # 11
When electrons revolve is stationary orbits
Choose an answer
There is no change in energy level
They vecome stationary
They are gaining kinetic energy
There is increase in energy
Previous
Skip
Next
Question # 12
The freezing point of 1 molal NaCl solution assuming NaCl to be 100% dissociated in water in
Choose an answer
-1.86
°C
-3.72
°C
+1.86
°C
+3.72
°C
Previous
Skip
Next
Question # 13
BiCl
3
on hydrolysis forms a white precipitate of
Choose an answer
Bismuthio acid
Bismuth oxychloride
Bismuth pentachloride
Bismuth hydroxide.
Previous
Skip
Next
Question # 14
Inert pair effect plays an important role in case of
Choose an answer
F
Al
Si
Tl
Previous
Skip
Next
Question # 15
Reaction of ethylamine with chloroform in alcoholic KOH produces
Choose an answer
CH
3
OH
CH
3
NC
C
2
H
5
NC
C
2
H
5
CN
Previous
Skip
Next
Question # 16
Which of the following statement regarding catalyst is not true?
Choose an answer
A catalyst remains unchanged in composition and quantity at the end of the reaction
A catalyst can initiate a reaction
A catalyst dose not alter the equilibrium in a reversible reaction
Catalysts are sometimes very specific in respect of reaction.
Previous
Skip
Next
Question # 17
Chile salt petre is
Choose an answer
NaNO
3
Na
2
SO4
KNO
3
Na
2
S
2
O
3
Previous
Skip
Next
Question # 18
In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in
Choose an answer
Lowering in b.pt.
Reducing viscity
Reducing specific heat
Lowering in freezing pt.
Previous
Skip
Next
Question # 19
The number of unpaired electrons in the p-subshell of oxygen atom
Choose an answer
1
2
3
4
Previous
Skip
Next
Question # 20
Setting of Plaster of Paris involves
Choose an answer
Oxidation with atmospheric
Combination with atmospheric CO
2
Dehydration
Hydration to yield another hydrate
Previous
Skip
Next
Question # 21
Causticisation process is used for the preparation of
Choose an answer
Caustic soda
Caustic potash
Baryata solution
Slaked lime
Previous
Skip
Next
Question # 22
Which of the following value of
Δ
Hf represent that product is least stable?
Choose an answer
-94.0 kcal mol
-1
-231.6 kcal mol
-1
+21.4 kcal mol
-1
+64.8 kcal mol
-1
Previous
Skip
Next
Back