Questions

Q:

Vishal is 20 years younger to Arya. Twelve years hence Arya's age will be 1.25 times that of Vishal. Aryais now ......... years old.

A) 78 B) 68
C) 88 D) 72
 
Answer & Explanation Answer: C) 88

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Q:

If cosec+sincosec-sin=53  then the value of sinis equal to

A) 1/2 B) 12
C) 32 D) 1
 
Answer & Explanation Answer: A) 1/2

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Q:

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

A) 2:2 B) 3:2
C) 3.5:2 D) 7:2
 
Answer & Explanation Answer: C) 3.5:2

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Q:

Glycol is used to manufacture which of the following ?

A) Nylon B) Artificial silk
C) Terylene D) Rubber
 
Answer & Explanation Answer: C) Terylene

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Q:

What is the reaction between an acid and a base called?

A) Desalination B) Crystallisation
C) Neutralisation D) Sublimation
 
Answer & Explanation Answer: C) Neutralisation

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Q:

The Chemical formula of Ammonium oxalate is _____.

A) NH4C2O4 B) (NH4)2CO4
C) (NH4)2C2O4 D) (NH4)2C2O3
 
Answer & Explanation Answer: C) (NH4)2C2O4

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Q:

Which electron dot formula represents a polar molecule?

A) A B) B
C) C D) D
 
Answer & Explanation Answer: B) B

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Q:

Carcinogenic chemicals cause

A) Heart diseases B) Diabetes
C) Cancer D) Asthma
 
Answer & Explanation Answer: C) Cancer

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Filed Under: Biology
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