HTML
   HTML5
   CSS
   CSS3
   JavaScript
   jQuery
   AngularJS
   Articles
   Tech Articles
   Blog
Google News
logo
Chemistry - General Knowledge Questions
1 .
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is
A)
Dalton's law
B)
Gay Lussac's law
C)
Henry's law
D)
Raoult's law

Correct Answer :   Henry's law

2 .
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
A)
0
B)
2
C)
4
D)
6

Correct Answer :   4

3 .
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's ca
A)
granite
B)
basalt
C)
igneous rocks
D)
sedimentary rocks

Correct Answer :   igneous rocks

4 .
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
A)
1/2
B)
1/4
C)
1/6
D)
1/8

Correct Answer :   1/8

5 .
The molecules of which gas have highest speed?
A)
H2 at -73oC
B)
CH4 at 300 K
C)
N2 at 1,027oC
D)
O2 at 0oC

Correct Answer :  

6 .
The molecular formula of phosphorous is
A)
P1
B)
P2
C)
P3
D)
P4

Correct Answer :   P4

7 .
The metallurgical process in which a metal is obtained in a fused state is called
A)
roasting
B)
smelting
C)
calcinations
D)
froth floatation

Correct Answer :   smelting

8 .
The inert gases are ____ in water
A)
sparingly soluble
B)
insoluble
C)
soluble
D)
None of these

Correct Answer :   sparingly soluble

9 .
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
A)
p-electrons in Ne(Z = 10)
B)
s-electrons in Mg(Z = 12)
C)
d-electrons in Fe(Z = 26)
D)
p-electrons in CI(Z = 17)

Correct Answer :   p-electrons in CI(Z = 17)

10 .
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
A)
liquation
B)
leaching
C)
levigation
D)
magnetic separation

Correct Answer :   levigation