Options:
- A. Filtration
- B. Sublimation
- C. Crystallization
- D. Solvent extraction
View Answer
D. Solvent extraction
Chemistry
Different components of a mixture have different Rf values due to________________?
Options:
- A. Polar solvent used
- B. Combination of solvents used
- C. Their different distribution coefficients in the solvent
- D. Distributive law
View Answer
C. Their different distribution coefficients in the solvent
In O2 each oxygen atom is hybridized_________________?
Options:
- A. sp3
- B. sp2
- C. sp
- D. All
View Answer
B. sp2
Bond order for N2 molecule is __________________?
Options:
- A. 2
- B. 1
- C. 3
- D. 4
View Answer
C. 3
Ionic bond is produced after complete transfer of ________________ ?
Options:
- A. Nucleus
- B. Neutrons
- C. Electrons
- D. Protons
View Answer
C. Electrons
The solid particles only posses_____________________?
Options:
- A. Translational motion
- B. Vibrational motion
- C. Rotational motion
- D. All of above motions
View Answer
B. Vibrational motion
For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature ?
Options:
- A. 1/2dm3
- B. 1/3dm3
- C. 1/4dm3
- D. 2/3dm3
View Answer
B. 1/3dm3
Conversion of reactant into product in unit time is called________________?
Options:
- A. rate of forward reaction
- B. rate of backward reaction
- C. rate constant
- D. rate co-efficient
View Answer
A. rate of forward reaction
Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?
Options:
- A. 0
- B. 1
- C. 2
- D. any one
View Answer
C. 2
In which of the following layer of atmosphere there is more thickness of ozone layer ?
Options:
- A. troposphere
- B. stratosphere
- C. mesosphere
- D. photosphere
View Answer
B. stratosphere