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Q:

If a quarter Kg of potato costs 60 paise, How many paise will 200 gm cost?

A) 48 Paise B) 54 Paise
C) 56 Paise D) 72 Paise
 
Answer & Explanation Answer: A) 48 Paise

Explanation:

Let the Required cost be X paise.  Less Weight , Less cost (Direct Proportion)

Therefore, 250 : 200 :: 60 : x

=> (250 * x) = (200 * 60)

=> x= 48

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Q:

If the Price of 6 toys is Rs. 264.37, What will be the approximate  price of 5 toys?

A) Rs.120 B) Rs.100
C) Rs.200 D) Rs.220
 
Answer & Explanation Answer: D) Rs.220

Explanation:

Let the required Price be Rs. X .Then, Lest toys , Less cost  (Direct Proportion) 

Therefore 6 : 5  :: 264.37 : x

=> 6 * x = 5 * 264.37

=> X= 220.308

Therefore,  Approximate price of 5 toys = Rs. 220

 

 

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Q:

Special 3-D photographs which have been taken with laser beams (and which make the objects look real) are called what?

A) Holograms B) 3D special effects
C) Portraits D) DVD
 
Answer & Explanation Answer: A) Holograms

Explanation:
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Q:

The amount of water vapour in the air is called...?

A) snow B) humidity
C) sunsafe factor D) water cycle
 
Answer & Explanation Answer: B) humidity

Explanation:
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Q:

What invisible force holds you onto the earth, so that you don't simply fall off?

A) gravity B) magnetism
C) wind D) speed
 
Answer & Explanation Answer: A) gravity

Explanation:
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Q:

Potassium Permanganate is used for purifying drinking water, because

A) it is a sterilising agent B) it dissolves the impurities of water
C) it is a reducing agent D) it is an oxidising agent
 
Answer & Explanation Answer: D) it is an oxidising agent

Explanation:
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Q:

Heavy water is

A) PH7 B) rain water
C) deuterium oxide D) tritium oxide
 
Answer & Explanation Answer: C) deuterium oxide

Explanation:
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Q:

What is the scientific name for washing soda?

A) Sodium carbonate B) Sodium bicarbonate
C) Calcium carbonate D) Calcium bicarbonate
 
Answer & Explanation Answer: A) Sodium carbonate

Explanation:
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Filed Under: General Science