Discussion
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- Question
The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________
Options- A. 1026
- B. 1023
- C. 1020
- D. 1019
- Correct Answer
- 1020
- 1. The atomic heat capacities of all solid elements __________ with decrease in temperature.
Options- A. increases
- B. decreases
- C. remains unchanged
- D. approach zero at 0°C Discuss
- 2. Which of the following is not a unit of pressure?
Options- A. Parsec
- B. Kilo-pascal
- C. Bar
- D. Newton/metre2 Discuss
- 3. "The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes". This is the __________ law.
Options- A. Dalton's
- B. Amgat's
- C. GayLussac's
- D. Avogadro's Discuss
- 4. If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will
Options- A. be reduced to l/4th.
- B. increase four times.
- C. increase two times.
- D. none of these. Discuss
- 5. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.?
Options- A. 0.2
- B. 0.1
- C. 0.4
- D. 0.6 Discuss
- 6. Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution).
Options- A.
- B.
- C.
- D. none of these Discuss
- 7. A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is
Options- A. N2O4
- B. N2O5
- C. N2O3
- D. none of these Discuss
- 8. Raoult's law is not applicable to the
Options- A. solutes which dissociate or associate in the particular solution.
- B. concentrated solutions.
- C. both(b)&(c)
- D. solutions containing non-volatile solute. Discuss
- 9. 2 litres of nitrogen at N.T.P. weighs __________ gms.
Options- A. 14
- B. 2.5
- C. 28
- D. 1.25 Discuss
- 10. The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to
Options- A. 1.5
- B. 15
- C. 150
- D. 1500 Discuss
Stoichiometry problems
Search Results
Correct Answer: decreases
Correct Answer: Parsec
Correct Answer: Amgat's
Correct Answer: increase four times.
Correct Answer: 0.6
Correct Answer:
Correct Answer: N2O5
Correct Answer: both(b)&(c)
Correct Answer: 2.5
Correct Answer: 1500
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