Q:

____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.

A) Sodium, Potassium	B) Magnesium, Aluminium
C) Sodium, Chlorine	D) Aluminium, Chlorine

Answer & Explanation Answer: C) Sodium, Chlorine

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Q:

An unbalanced chemical equation is called a

A) rough chemical equation	B) natural chemical equation
C) complex chemical equation	D) skeletal chemical equation

Answer & Explanation Answer: D) skeletal chemical equation

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Q:

An economic system combining private and state enterprise is called as _____

A) Market economy	B) Centrally planned economy
C) Private economy	D) Mixed economy

Answer & Explanation Answer: D) Mixed economy

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Q:

What is dry ice?

A) Solid Carbon dioxide	B) Solid Nitrogen dioxide
C) Solid Sulphur dioxide	D) Solid Water

Answer & Explanation Answer: A) Solid Carbon dioxide

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Q:

Methane an air pollutant is produced ______.

A) by action of ultraviolet light on nitrogenous compounds.	B) as a by-product of manufacturing ammoniacal fertilizers
C) by burning of coal in insufficient air	D) by digestion of food by animals

Answer & Explanation Answer: D) by digestion of food by animals

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Q:

What is the process of rust forming on iron called?

A) Rusting	B) Crystallisation
C) Shovel	D) Spade

Answer & Explanation Answer: A) Rusting

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Q:

The Chemical formula of Acetic acid is _____.

A) CH3COH	B) CH3COOH
C) CH3COCH3	D) CH2COOH

Answer & Explanation Answer: D) CH2COOH

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Q:

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.

Rebuke

A) Admonition	B) Censure
C) Scold	D) Flattery

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