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Q:

When two liquids do not mix with each other to form a solution, what is it called?

A) Solvent B) Solute
C) Immiscible D) Decantation
 
Answer & Explanation Answer: C) Immiscible

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Q:

Which of the following compounds has a double bond?

A) Acetylene B) Ethene
C) Ethane D) Methane
 
Answer & Explanation Answer: B) Ethene

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Q:

Which of the following is an amphoteric oxide?

A) Aluminium oxide B) Iron oxide
C) Magnesium oxide D) Carbon dioxide
 
Answer & Explanation Answer: A) Aluminium oxide

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Q:

Common salt (NaCl) is made up of

A) a weak acid and a weak base B) a strong acid and a weak base
C) a weak acid and a strong base D) a strong acid and a strong base
 
Answer & Explanation Answer: D) a strong acid and a strong base

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Q:

Choose the one which is different or odd from the following.

A) Aluminium B) Iron
C) Copper D) Brass
 
Answer & Explanation Answer: D) Brass

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Q:

Which of the following elements was the last element in Newland's Law of Octaves?

A) Thorium B) Hydrogen
C) Rubidium D) Bromine
 
Answer & Explanation Answer: A) Thorium

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Q:

Biogas is produced from biomass by

A) destructive distillation B) fractional distillation
C) anaerobic fermentation D) dry distillation
 
Answer & Explanation Answer: C) anaerobic fermentation

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Q:

What is the pH value of human blood?

A) 8.3 B) 6.8
C) 7.4 D) 6
 
Answer & Explanation Answer: C) 7.4

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