Science Content-Basic Chemistry [CTET (Central Teacher Eligibility Test) Paper-II Science]: Questions 1 - 5 of 46

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Question 1

Appeared in Year: 2012

Question MCQ▾

When carbon dioxide is passed through clear limewater solution, it turns milky. The milky appearance of limewater is due to (Jan)

Choices

Choice (4)Response

a.

Presence of soluble calcium carbonate

b.

Presence of insoluble calcium carbonate

c.

Curdling of milk due to lime in lime water

d.

Presence of impurities in limewater

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Question 2

Appeared in Year: 2012

Question MCQ▾

PET bottles and jars are commonly used for storing edible items. PET is a very familiar form of (Jan)

Choices

Choice (4)Response

a.

Polyester

b.

Rayon

c.

Acrylic

d.

Polyamide

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Question 3

Question MCQ▾

Aqueous solution of which of the following oxides will change the color of red litmus to blue?

Choices

Choice (4)Response

a.

Potassium oxide

b.

Sulphur dioxide

c.

Phosphorus oxide

d.

Carbon dioxide

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Question 4

Appeared in Year: 2011

Question MCQ▾

While diluting sulphuric acid, it is recommended that the acid should be added to water because (June)

Choices

Choice (4)Response

a.

Acid may break the glass container

b.

Acid has strong affinity for water

c.

Dilution of acid is highly endothermic

d.

Dilution of acid is highly exothermic

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Question 5

Question MCQ▾

When sunlight flashes on the silver chloride it turns into grey color from white color, this is the example of

Choices

Choice (4)Response

a.

Displacement and redox reactions

b.

Combination reaction

c.

Double displacement reaction

d.

Decomposition reaction

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