Free Printable Sample Test On CEEC

1.

In the given figure, electrolyte, anode and cathode respectively are

a)

A, B and C

b)

B, A and C

c)

B, C and A

d)

A, C and B

e)

C, B and A

2.

The diagram shows a beaker containing a solution of zinc sulphate and two carbon electrodes. A battery is placed next to it. In order that the electrode P be plated with zinc

a)

P must be connected to S and Q to R

b)

P must be connected to Q and S to R

c)

P must be connected to R and Q to S

d)

P and Q must be connected to R

3.

Which of the following pair(s) is/are incorrect?

(i) Silver----------- Good conductor

(ii) Gold ---------- Poor conductor

(iii) Diamond ------- Good conductor

(iv) Glass ----------------- Poor conductor

(v) steel ------------ Good conductor

a)

i & ii only

b)

ii & iv only

c)

ii & iii only

d)

i, ii, iii & v only

e)

i ,ii, iii, iv & v

4.

An electric current is passed through

a conducting solution. Following are the some observations:

(i) Deposits of metal may be seen on electrodes

(ii) Solution may get heated

(iii) Bubbles of gas may be formed on the electrodes

a)

Only (ii) is true.

b)

Only (i) and (ii) are true.

c)

Only (i) and (iii) are true.

d)

All (i), (ii) and (iii) are true.

5.

The bumpers and door handles of motor cars, taps etc. are coated with silvery layer of chromium because

(i) It does not easily get corroded.

(ii) It forms a hard layer which does not easily get scratched.

(iii) It tarnishes quickly.

(iv) It is cheap.

Which of the following options is correctly identifies true (T) or false (F)?

a)

(i) F (ii) F (iii) T (IV) T

b)

(i) T (ii) T (iii) F (IV) F

c)

(i) F (ii) T (iii) F (IV) T

d)

(i) T (ii) T (iii) F (IV) T

6.

Match the two columns and select the correct option from the codes given below.

Column I Column II

1. CFLs P. Electric circuit

2. Closed path Q. Contain toxic mercury

3. Solution of distilled water and salt R. conducts current

a)

1- Q, 2- P, 3- R

b)

1- R, 2- Q, 3- P

c)

1- P, 2- R, 3- Q

d)

1- P, 2- Q, 3- R

7.

Electroplating is widely used in industry for coating metal objects with a thin layer of a deferent metal. This may be done to

(i) make objects appear shiny.

(ii) prevent corrosion.

(iii) make objects resistant to scratches.

(iv) coat more reactive metal on less reactive metals to protect from getting spoilt.

(v) electroplate less expensive metals with silver and gold to make ornaments.

Which of the above statement(s) is/are correct?

a)

i & ii only

b)

ii,& iii only

c)

i & iv only

d)

i, ii, iii & v only

e)

i ,iv & v Only

8.

Read the given statements and select the correct option.

Statement 1: Oil or alcohol does not conduct electricity.

Statement 2: Conduction of liquids depends on the ability of liquids to form ions.

a)

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

b)

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

c)

Statement 1 is true but statement 2 is false.

d)

Statement 1 is false but statement 2 is true.

e)

Both statements 1 and 2 are false.

9.

Assertion: Metals like copper and aluminium are poor conductors of electricity..

Reason: The materials which allow electric current to pass through are called good conductors of electricity

a)

If both assertion and reason are true and the reason is the correct explanation of the assertion.

b)

If both assertion and reason are true but reason is not the correct explanation of the assertion.

c)

If assertion is true but reason is false.

d)

If the assertion and reason both are false.

e)

If assertion is false but reason is true.

10.

A circuit made of wires, a lamp, a switch, and a cell is shown in Fig. What change is needed for the lamp to glow?

a)

The switch needs to be opened.

b)

The switch needs to be closed.

c)

The cell needs an insulator.

d)

The wire needs to be connected to the bottom of the cell.

Sample Test On CEEC

Total questions: 10

Worksheet time: 20mins

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