Which of the following can be separated by ” Sublimation Method”?
A. Sand and Iron Filing
B. Sand and Naphthalene
C. Both A & B
D. None
The Chemical Formula of Sand is:
A. Si2O3
B. SiO2
C. Al2O3
D. Sr2O
Benzene gives mainly:
A. Addition reaction
B. Substitution reactions
C. Halogenation
D. All of these
The Bond Energy of H-F is:
A. 456kJ/mol
B. 562kJ/mol
C. 281kJ/mol
D. None
The element used for the formation of alloys is:
A. Iron
B. Calcium
C. Mercury
D. Chromium
Air is a/an:
A. Compound
B. Element
C. Electrolyte
D. Mixture
Give Electronic configuration of Sodium:
A. 1s2,2s2,2p6
B. 1s2,2s2,2p6,3s2
C. 1s2,2s2,2p6,3s1
D. None of these
For the generation of biogas, the materials commonly used are:
A. Animal wastes
B. Forest residues
C. Aquatic plants
D. None of these
Which of the following is not the name of any scientist?
A. Pauli exclusion principle
B. Hund’s rule
C. Aufbau’s principle
D. Le-Chatelier’s principle
Which of the following is the most Viscous?
A. Glycerine
B. Water
C. Honey
D. Spirit
