Default Title

Question (1)

QN001911

A battery produces electricity mainly due to

(A) magnetic force
(B) chemical reactions inside it
(C) friction between metals
(D) sunlight falling on it

Correct Answer: B

Explanation:

Batteries generate electricity through chemical reactions.

Link:

Report Error

Question (2)

QN001912

The liquid or paste inside a cell that helps conduct electricity is called

(A) conductor
(B) insulator
(C) electrolyte
(D) resistor

Correct Answer: C

Explanation:

Electrolyte helps movement of charges inside the cell.

Link:

Report Error

Question (3)

QN001913

Which of the following is a source of electric current based on chemical reactions?

(A) Compass
(B) Dry cell
(C) Magnet
(D) Fuse

Correct Answer: B

Explanation:

Dry cells produce electricity using chemical reactions.

Link:

Report Error

Question (4)

QN001914

In a simple Voltaic cell, electricity is generated because of chemical reactions between

(A) two magnets
(B) metals and electrolyte
(C) plastic and air
(D) wood and water

Correct Answer: B

Explanation:

Chemical reactions between electrodes and electrolyte generate electricity.

Link:

Report Error

Question (5)

QN001915

A lemon cell can produce electricity because lemon juice acts as

(A) magnet
(B) electrolyte
(C) insulator
(D) resistor

Correct Answer: B

Explanation:

Lemon juice acts as an electrolyte.

Link:

Report Error

Question (6)

QN001916

A student replaces lemon juice with pure water in a lemon cell. The LED most likely stops glowing because pure water

(A) is a strong conductor
(B) cannot act effectively as electrolyte
(C) increases current greatly
(D) melts the electrodes

Correct Answer: B

Explanation:

Pure water is a poor conductor and weak electrolyte.

Link:

Report Error

Question (7)

QN001917

Which pair of materials is commonly used as electrodes in a lemon cell activity?

(A) Wood and plastic
(B) Copper and zinc
(C) Glass and rubber
(D) Iron and paper

Correct Answer: B

Explanation:

Copper and zinc act as electrodes in lemon cells.

Link:

Report Error

Question (8)

QN001918

In a dry cell, the zinc container acts as the

(A) positive terminal
(B) negative terminal
(C) electrolyte
(D) carbon rod

Correct Answer: B

Explanation:

Zinc container forms the negative terminal.

Link:

Report Error

Question (9)

QN001919

The carbon rod in a dry cell acts as the

(A) negative terminal
(B) heating element
(C) positive terminal
(D) fuse wire

Correct Answer: C

Explanation:

Carbon rod forms the positive terminal.

Link:

Report Error

Question (10)

QN001920

A dry cell is called “dry” because it contains

(A) no chemicals
(B) completely dry powder only
(C) thick paste electrolyte
(D) only solid metals

Correct Answer: C

Explanation:

Dry cells contain paste-like electrolyte instead of liquid.

Link:

Report Error

Question (1)

A battery produces electricity mainly due to

Explanation:

Link:

Question (2)

The liquid or paste inside a cell that helps conduct electricity is called

Explanation:

Link:

Question (3)

Which of the following is a source of electric current based on chemical reactions?

Explanation:

Link:

Question (4)

In a simple Voltaic cell, electricity is generated because of chemical reactions between

Explanation:

Link:

Question (5)

A lemon cell can produce electricity because lemon juice acts as

Explanation:

Link:

Question (6)

A student replaces lemon juice with pure water in a lemon cell. The LED most likely stops glowing because pure water

Explanation:

Link:

Question (7)

Which pair of materials is commonly used as electrodes in a lemon cell activity?

Explanation:

Link:

Question (8)

In a dry cell, the zinc container acts as the

Explanation:

Link:

Question (9)

The carbon rod in a dry cell acts as the

Explanation:

Link:

Question (10)

A dry cell is called “dry” because it contains

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY