MCQ TRAINING

Some crystals of copper sulphate were dissolved in water. The color of the solution obtained would be

• green
• red
• blue
• brown.

What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer

• (a) Hydrogen gas and iron chloride are produced.
• (b) Chlorine gas and iron hydroxide are produced
• (c) No reaction takes place
• (d) Iron salt and water are produced

Chemically rust is

• Hydrated ferrous oxide
• hydrated ferric oxide
• only ferric oxide
• none of these

Heat is evolved diving

• (a) Endothermic Reaction
• (b) Displacement Reaction
• (c) Combustion Reaction
• (d) Combination Reaction

The reaction H2+Cl2 2HCl represents :

• Oxidation
• Reduction
• Decomposition
• Combination

Assertion: A crow sitting on the branch of the tree shook the tree, and the snow from tree fell on the poet. This made him angry and it ruined his day. Reason: The poet felt relaxed and thankful to the nature for saving his day from being wasted.

• -Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is NOT the correct explanation of A. .

• A is true but R is false.

• A is false but R is true

• Both A and R are false.

Assertion: A. All living organisms are composed of cells and products of cells.

Reason: B. All cells arise from pre-existing cells.

• both assertion and reason are true and reason is the correct explanation of assertion

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

• assertion is true but reason is false.

• both assertion and reason are false.

Assertion: A. The cytoplasm is the main arena of cellular activities in both the plant and animal cells.

Reason: B. Various chemical reactions occur in it to keep the cell in the ‘living state’.

• Both are incorrect

• A is correct but B is incorrect

• Both are correct

• A is incorrect but B is correct

This map of India denotes accommodation based on

• Linguistic Diversity

• Economic and Social Diversity

• System of government

Assertion: Powerful emotions drag the world toward a calming end. Reason: Desires and hatred contribute to make the world stand at the verge of destruction

• ● A - Both A and R are true and R is the correct explanation of A.

• ● B - Both A and R are true but R is NOT the correct explanation of A.

• ● C - A is true but R is false.

• ● D - A is false but R is true.

• ● E - Both A and R are false.