During the formation of a chemical bond : from Chemistry NEET Ye

Subject

Chemistry

Class

NEET Class 12

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

1.

2SO2 (g) + O2 (g) V2O5 (s)  is an example for :

  • neutralisation reaction

  • homogeneous catalysis

  • heterogeneous catalysis

  • irreversible reaction


Advertisement

2.

During the formation of a chemical bond :

  • electron-electron repulsion becomes more than the nucleus-electron attraction

  • energy of the system does not change

  • energy increases

  • energy decreases


D.

energy decreases

During the formation of a chemical bond energy decreases .


Advertisement
3.

Which ofthe following is an intensive property ?

  • Temperature

  • Viscosity

  • Surface tension

  • All of these


4.

In equilibrium state , the value of G is :

  • zero

  • negative

  • positive

  • may be negative or positive


Advertisement
5.

Molarity of a given orthophosphoric acid solution is 3 M .It's normality is :

  • 9 N

  • 0.3 N

  • 3 N

  • 1 N


6.

Hydroxyl ion concentration of 10-2 M HCl is :

  • 1 x 101 mol dm-3

  • 1 x 10-12 mol dm-3

  • 1 x 10-1 mol dm-3

  • 1 x 10-14 mol dm-3


7.

For a certain particle , it is found that uncertainty in velocity is reciprocal of uncertainty in position .This implies that :

  • mass of particle > unity

  • mass of particle = unity

  • mass of particle  h

  • mass of particle  h / 4π


8.

Entropy of the universe is :

  • constant

  • zero

  • continuously decreasing

  • continuously increasing


Advertisement
9.

Which one of the following salts on being dissolved in water gives pH > 7 at 25°C ?

  • KCN

  • KNO3

  • NH4Cl

  • NH4CN


10.

The volume of 10N and 4N HCl required to make 1 L of 7N HCl are :

  • 0.50 L of 10N HCl and 0.50 L of 4N HCl

  • 0.60 L of 10N HCl and 0.40 L of 4N HCl

  • 0.80 L of 10N HCl and 0.20 L of 4N HCl

  • 0.75 L of 10N HCl and 0.25 L of 4N HCl


Advertisement