Questions

Q:

When light passes from one medium to another, this phenomenon of change in its direction is called _____.

A) Refraction B) Diffraction
C) Propagation D) No option is correct
 
Answer & Explanation Answer: A) Refraction

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Q:

A person lifts luggage of 20 kg from the ground and puts it on his head 2 in above the ground. Calculate the work done by him. (g = l0 )

A) 20 J B) 400J
C) 200J D) 40J
 
Answer & Explanation Answer: B) 400J

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Q:

If a body is moving on a circular path, what is its average velocity if it completes one cycle in one second?

A) Average velocity depends upon time taken to complete one cycle B) One
C) Average velocity is same as average speed D) Zero
 
Answer & Explanation Answer: D) Zero

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Q:

What are the three main parts of a Eukaryotic cell?

Answer

Eukaryotic cells are found in plants, animals and unicellular organisms.


 


The three main part of Eukaryotic cells are


1. Plasma membrane or membrane-bound organelles which carries out the cell functions.


2. Nucleus which contains the cell's DNA (and)


3. Cytoplasm which is a jelly like fluid interior of the cell.

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Q:

What is plant cell wall mainly composed of?

A) Lipids B) Vitamin
C) Cellulose D) Protein
 
Answer & Explanation Answer: A) Lipids

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Q:

Which of the following elements is used for vulcanizing rubber?

A) Sulphur B) Chlorine
C) Bromine D) Phosphorus
 
Answer & Explanation Answer: A) Sulphur

Explanation:

Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur rubber much stronger, more flexible, and more resistant to heat and other environmental conditions.

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Q:

Kidney stones are composed of ______.

A) Calcium Oxalate B) Sodium Chloride
C) Magnesium Nitrate D) Calcium Bicarbonate
 
Answer & Explanation Answer: A) Calcium Oxalate

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Q:

China was also known as

Answer

Chung hua

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Subject: World History

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