A. Filter hot solution
B. Avoid premature crystallization
C. Increase the rate of filtration
D. Decrease the area
✅ The correct answer is option C.
Chemistry MCQs
Acid present in acid rain may be
A. H2SO4
B. HNO3
C. Both A and B
D. None
✅ The correct answer is option C.
The metal which is used in thermite process because of its activity is
A. Iron
B. Copper
C. Aluminium
D. Zinc
✅ The correct answer is option C.
Safe and the most reliable method of drying crystals is through
A. Filter paper
B. Vacuum desiccators
C. Oven
D. None of these
✅ The correct answer is option B.
The yellow colour in photochemical smog is due to the presence of
A. Dinitrogen oxide
B. Nitrogen dioxide
C. Chlorine gas
D. Chlorine dioxide
✅ The correct answer is option B.
Aluminium oxide is
A. Acidic oxide
B. Basic oxide
C. Amphoteric oxide
D. It does not exist
✅ The correct answer is option C.
A substance having a very high vapour pressure at its melting point on heating will show
A. Melting
B. Sublimation
C. Decomposition
D. Condensation
✅ The correct answer is option B.
Which of the following shows inert pair effect?
A. Boron
B. Carbon
C. Silicon
D. Tin
✅ The correct answer is option D.
A process controlled by Distributive law is
A. Crystallization
B. Sublimation
C. Solvent extraction
D. Filtration
✅ The correct answer is option C.
Which of the following solutions of H2SO4 is more concentrated?
A. 1 Molar solution
B. 1 molar solution
C. 1 normal solution
D. All have the same concentration
✅ The correct answer is option A.