1 : At higher altitudes the boiling point of water lowers because
Options:
  1. atmospheric pressure is low
  2. temperature is low
  3. atmospheric pressure is high
  4. none of these

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

2 : The pressure cooker reduces cooking time because
Options:
  1. the heat is more evenly distributed
  2. the higher pressure tenderizes the food
  3. the boiling point of the water inside is elevated
  4. a large flame is used

Answer: Option 3

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

3 : Ozone is prepared by passing silent electric discharge through oxygen. In this reaction
Options:
  1. energy is given out
  2. energy is absorbed
  3. oxygen is loaded with energy
  4. oxygen is dissociated into atoms

Answer: Option 2

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

4 : Heat exchanged in a chemical reaction at constant temperature and constant pressure is called as
Options:
  1. internal energy
  2. enthalpy
  3. entropy
  4. free energy

Answer: Option 2

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

5 : The internal energy of a substance
Options:
  1. increases with increase in temperature
  2. decrease with increase in temperature
  3. remains unaffected with change in temperature
  4. none of the above

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

6 : The neutralisation of a strong acid by a strong base liberates an amount of energy per mole of hydrogen ion that
Options:
  1. depends upon which acid and base are involved
  2. depends upon the temperature at which the reaction takes place
  3. depends upon which catalyst is used
  4. is always the same

Answer: Option 4

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

7 : An ideal gas at constant temperature and pressure expands, then its
Options:
  1. internal energy remains same
  2. internal energy decreases
  3. internal energy increases
  4. entropy first increases and then decreases

Answer: Option 1

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

8 : One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 liter to 10 liters. The change in energy for this process is
Options:
  1. 163.7 cal
  2. 850.2 cal
  3. 1381.1 cal
  4. zero

Answer: Option 4

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

9 : The enthalpy change of a reaction does not depend on
Options:
  1. the state of reactants and products
  2. nature of reactants and products
  3. different intermediate reaction
  4. initial and final enthalpy change of a reaction

Answer: Option 3

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

10 : 8 gm of methane is completely burnt in air. The number of moles of water produced are
Options:
  1. 0.5
  2. 2
  3. 1
  4. 18

Answer: Option 3

Explanation:

Sorry, No description available. Discuss this in Forums

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough




Download StudyAlways app from google play





Wake up and smell the wealth with Cosmic Ordering.
-Stephen Richards Cosmic Ordering Guide