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Q:

Depletion of ozone layer is caused by

A) CFC's B) Carbon tetra-chloride (CCl4)
C) HCFC's D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Ozone layer depletion is one of the most serious problems faced by our planet earth. Substances that Deplete the Ozone Layer (ODS) emission are responsible for ultraviolet radiations from the sun break them to release chlorine (from CFCs) and bromine (from methyl bromide and halons).

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Filed Under: General Awareness
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Q:

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correctalternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

None knows how it was happened

A) was happen B) has happened
C) happened D) No improvement
 
Answer & Explanation Answer: C) happened

Explanation:
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Filed Under: English
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Q:

All the organisms on your campus make up

A) a community B) a group
C) an ecosystem D) None of the above
 
Answer & Explanation Answer: A) a community

Explanation:

All the organisms on your campus make up a community.

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Filed Under: General Science
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Q:

A man donates 30% of his wealth to charity. 30% and 25% of the remaining wealth to his wife and son respectively. The rest he divides equally between his three daughters. One of his daughter gets Rs 42 lakh as her share. What was the man's wealth (in Rs lakhs)?

A) 280 B) 400
C) 500 D) 350
 
Answer & Explanation Answer: B) 400

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

Which equation is an example of a synthesis reaction?

A) 2H2 + O2 → 2H2O B) Na + Cl → NaCl
C) HA + BOH → H2O + BA D) NaCl + AgNO3 → NaNO3 + AgCl
 
Answer & Explanation Answer: B) Na + Cl → NaCl

Explanation:

When two or more chemical species combine to form a single product, the reaction is said to be synthesis reaction. It is also called as Direct Combination reaction.

 

Here in the given options, Sodium (Na) combines with Chlorine (Cl) to form a more complex single product Sodium Chloride (NaCl).

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Filed Under: Chemistry
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Q:

Every integer is a rational number.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Yes, Every integer is a rational number.  A rational number is a number which can be expressed as a ratio of two integers numerator and denominator where (the denominator not being 0 ).


Hence, Every integer can be expressed in ratio of two integers. 

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Subject: Arithmetical Reasoning
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Q:

Mohit buys an old bicycle for Rs 2700 and spends Rs 500 on its repairs. If he sells the bicycle for Rs 3520, then what is his profit percentage?

A) 10 B) 12.5
C) 15 D) 20
 
Answer & Explanation Answer: A) 10

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The humidity of the air depends upon

A) Weather B) Temperature
C) Location D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Humidity means the amount of watervapour present in the atmosphere. It depends on weather, location and temperature of the place.

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Filed Under: Physics
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