Questions

Q:

Water is a compound because it?

A) it contains two different elements joined by chemical bond B) it contains hydrogen & oxygen
C) it exists as solid, liquid or gas D) it cannot be split up into simpler substances by chemicals means
 
Answer & Explanation Answer: A) it contains two different elements joined by chemical bond

Explanation:

We know that All compounds are molecules, but not all molecules are compounds.

Water is a molecule because it is made from atoms that have been chemically combined. It is also a compound because the atoms that make water are not all the same - some are oxygen and some are hydrogen.

 

Hence, Water is a molecule and a compound.

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Q:

Which of the following is tropical grassland?

A) Savannah B) Pampas
C) Prairies D) Taiga
 
Answer & Explanation Answer: A) Savannah

Explanation:

Tropical grasslands, or savannas, are also the homes of primates in Africa and Asia; no savanna-living primates exist in South America. Tropical grasslands comprise a mixture of trees and grasses, the proportion of trees to grass varying directly with the rainfall.

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Filed Under: Indian Geography
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Q:

Improve the bracketed part of the sentence.

Virat bats very well, (didn't he)?

A) isn't it B) doesn't he
C) wasn't it D)  no improvement
 
Answer & Explanation Answer: B) doesn't he

Explanation:
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Q:

One who dies for a noble cause

A) Martyr B) Pilgrim
C) Astronomer D) Pantomath
 
Answer & Explanation Answer: A) Martyr

Explanation:

One who dies for a noble cause is called a martyr. He is a person who dies fighting for what they believe in like advocating religious or other beliefs, refusing to renounce, etc...

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Q:

Although glory but not at my best. Power will fall to me when the man who made me dies. What am I?

Answer

PRINCE.

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Q:

The international township built near Pondicherry in India in coloration with UNESCO is called

A) Elbaville B) Auroville
C) Gayaville D) Broadway
 
Answer & Explanation Answer: B) Auroville

Explanation:
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Q:

Water is an example of?

A) Element B) Molecule
C) Compound D) Both B & C
 
Answer & Explanation Answer: D) Both B & C

Explanation:

Why Water Is Not an Element :

An element is a substance consisting of only one type of atom. Water consists of two types of atoms: hydrogen and oxygen.

 

water is both a molecule and a compound :

A compound forms whenever two or more atoms form chemical bonds with each other. The chemical formula for water is H2O, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms.

Thus, water is a compound.

 

It's also a molecule, which is any chemical species formed by two or more atoms chemically bonded to each other. The terms molecule and compound mean the same thing and can be used interchangeably.

 

Hence, water is both a molecule and a compound.


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Q:

A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because 

A) the floor and carpet are at different temperatures B) the stone conveys the heat away from the feet more rapidly than the carpet
C) the carpet is a better conductor of heat than the stone D) the human body maintains a constant temperature
 
Answer & Explanation Answer: B) the stone conveys the heat away from the feet more rapidly than the carpet

Explanation:

Both the floor and the carpet have the same temperature as both are exposed to the same atmosphere. But the former conducts away the heat from the feet better than the carpet as the latter is a non-conductor. So the feet losing more heat, the floor appears cooler to the feet.

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Filed Under: Physics

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