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
NAT II Physical Science Chemistry MCQs With Answers
Question # 1
In which of the following elements +1 oxidation state is more stable than +3
Choose an answer
B
Al
ga
Ti
Previous
Skip
Next
Question # 2
Which of the following has linear shape?
Choose an answer
SP
SP
2
SP
3
None of the above
Previous
Skip
Next
Question # 3
Bell metal is an alloy of
Choose an answer
Cu, Zn and Sn
Cu, Zn and Ni
Cu and Zn
Cu and Sn
Previous
Skip
Next
Question # 4
The unit rate of a reaction can be increased in general by all the factors except by
Choose an answer
Using a catalyst
Increasing temperature
Increasing the activation energy
Increasing the conc. of reactants
Previous
Skip
Next
Question # 5
The total number of protons in 10 g of calcium carbonate is (N
0
= 6.023 x 10
23
)
Choose an answer
1.5057 x 10
24
2.0478 x 10
24
3.0115 x 10
24
4.0956 x 10
24
Previous
Skip
Next
Question # 6
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 # 7
The reagent which forms crystalline osazone derivation when treated with glucose is
Choose an answer
Fehling solution
Phenyl hydrazine
Benedict solution
Hydroxyl amine
Previous
Skip
Next
Question # 8
The heat evolved in combustion of rhombic and monoclinic sulphur are -70960 and -71030 cal mol
-1
respectively. What will be heat of conversion of rhombic sulphur to monoclinic?
Choose an answer
70960 calories
71030 calories
-70 calories
+70 calories
Previous
Skip
Next
Question # 9
Formic acid is obtained when
Choose an answer
Calcium acetate is heated with conc. H
2
SO
4
Calcium formate is heated with calcium acetate
Glycerol is heated with oxalic acid
Acetaldehyde is oxidized with K2Cr
2
O
7
and H
2
SO
4
Previous
Skip
Next
Question # 10
Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
Choose an answer
Chlorination, nitration, reduction
Nitration, Chlorination, reduction
Nitration, reduction, chlorination
Nitration, reduction, acylation, chorination, hydrolysis
Previous
Skip
Next
Question # 11
Bromine is obtained on a commercial scale from
Choose an answer
Caliche
Carnallite
Common satl
Cryolite
Previous
Skip
Next
Question # 12
Heating a micture of sodium benzoate and soda lime gives
Choose an answer
Benzene
Methane
Sodium benzoate
Calcium benzoate
Previous
Skip
Next
Question # 13
Calcium acetate when dry distilled gives
Choose an answer
Formaldehyde
Acetaldehyde
Acetone
Acetic anhydride
Previous
Skip
Next
Question # 14
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
Choose an answer
Mercury
Lead
Nitrogen oxide
Sulphur oxide
Previous
Skip
Next
Question # 15
Which one of the following compounds does not exist?
Choose an answer
NCl
5
AsF
5
SbCl
5
PF
5
Previous
Skip
Next
Question # 16
Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because
Choose an answer
Helium is much less soluble in blood than nitrogen
Helium is much less soluble in blood than helium
Under the sea nitrogen and oxygen react to give poisonous nitric oxide
Nitrogen is highly soluble in water.
Previous
Skip
Next
Back