NDA CHEMISTRY QUIZ

Question 1:

In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?

Lead sulphate

Lead acetate

Ammonium nitrate

Potassium sulphate

Question 2:

The following reaction is an example of a-

4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)

Displacement reaction and neutralization reaction

Combination reaction and neutralization reaction

Redox reaction and displacement reaction

Displacement reaction and redox reaction

Question 3:

Which of the following are exothermic processes?
A. Dilution of sulphuric acid
B. Sublimation of dry ice
C. Condensation of water vapours
D. Respiration in human beings

A and B

B and C

A, C and D

Only D

Question 4:

Which one of the following statements is NOT correct for the given reaction?

Iron is the oxidizing agent

The solution turns green in colour after the reaction

Copper is less reactive metal than iron

The reaction is an example of a redox reaction

Question 5:

A student obtains a white precipitate on mixing two different salt solutions A and B in a beaker. A solution is acidified with hydrochloric acid is used as a reagent to test for sulphate ions. B salt is also known as sulphate of soda. The white precipitate is

Barium chloride

Barium sulphate

Sodium chloride

Zinc sulphate

Question 6:

Select the reducing agent for the following reaction-

H₂S + I₂ ----> 2HI + S

I₂

H₂S

HI

S

Question 7:

Which of the following are combination reactions?

(i) Zn + FeSO₄→ ZnSO₄ + Fe

(ii) MgO + H₂O → Mg(OH)₂

(iii)4Al + 3O₂→ 2Al₂O₃

(iv) 2KClO₃ -----> 2KCl + 3O₂

Only (i)

Only (iv)

(ii) and (iv)

(ii) and (iii)

Question 8:

Precipitation reaction takes place

when the concentration of dissolved ions in the solution less than solubility product.

when the concentration of dissolved ions in the solution equal to solubility product.

when the concentration of dissolved ions in the solution exceeds solubility product.

Both 1 and 2

Question 9:

…………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface.

Rancidity

Corrosion

Oxidation

Reduction

Question 10:

DIRECTIONS: Read the following two statements and choose the correct answer.

Statement I -The reaction Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s) is type of double displacement reaction.

Statement II – Zinc is more reactive than copper

Statement I is correct but II is incorrect

Statement II is correct but I is incorrect

Both statements are correct and statement II is the correct explanation of statement I

Both statements are incorrect

NDA CHEMISTRY QUIZ - 28

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:

Question 10:

Time Left : 00:00:00

NDA CHEMISTRY QUIZ - 28

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Question 8:

Question 9:

Question 10:

Time Left : 00:00:00

Welcome

GET THE APP

Verify Your Mobile Number