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Q:

India’s who has won the girl's title in the IBSF World Under-16 Snooker Championships 2018?

A) Keerthana Pandian B) Sangeeta Chanu
C) Kumar Mangalan D) Thangjam Tababi Devi
 
Answer & Explanation Answer: A) Keerthana Pandian

Explanation:

India's Keerthana Pandian has won the girls’ title in the IBSF World Under-16 Snooker Championships.

 

In the final in St Petersburg, Russia, Keerthana outclassed her Belarussian rival Albina Leschuk 3-1.

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Q:

India's 1st 'Methanol Cooking Fuel Program' has been recently launched in which of the following state? 

A) Assam B) Tripura
C) Karnataka D) Odisha
 
Answer & Explanation Answer: A) Assam

Explanation:
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Q:

Which non metal is liquid at room temperature?

A) Mercury B) Caesium
C) Bromine D) Rubidium
 
Answer & Explanation Answer: C) Bromine

Explanation:

Mercury and Bromine both will be in liquid state at room temperature. But mercury is metal. Hence, bromine is the only non metal which is in liquid state at room temperature.

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Q:

Natwar Thakkar was popularly known as

A) Manipur's Gandhi B) Modern day Gandhi
C) Nagaland's Gandhi D) Nagaland's Iron man
 
Answer & Explanation Answer: C) Nagaland's Gandhi

Explanation:

Natwar Thakkar, a Padma Shree awardee was popularly known as Nagaland's Gandhi as he had founded Gandhi Ashram in Nagaland's Chuchuyimlang.

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Q:

a2 + b2 + c2 -ab- bc - ca = 0, iff

A) abc = -1 B) a = b = c
C) abc = 1 D) abc = 0
 
Answer & Explanation Answer: B) a = b = c

Explanation:

Here given formula is 

a2 + b2 + c2 -ab- bc - ca = 0

and it is possible if and only if a = b = c.

From the trial and error method, 

1) Let a = b = c = 1

Now substitute these values of a, b, c in the above formula.

We get 1 + 1 + 1 - 1 - 1 - 1 = 3 - 3 = 0

 

2) Now, let a = b = c = 4

Now substitute these values of a, b, c in the above formula.

We get 16 + 16 + 16 - 16 - 16 - 16 = 48 - 48 = 0.

 

Hence, it is possible that 

a2 + b2 + c2 -ab- bc - ca = 0 iff  a = b = c.

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Q:

Which of the following is not a strong acid?

A) H2SO4 B) CH3COOH
C) HCl D) HBr
 
Answer & Explanation Answer: B) CH3COOH

Explanation:

CH3COOH, chemically known as Acetic acid, is not a strong acid among the given acids like Sulphuric acid, Hydrochloric acid,...

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Q:

Which nitrogenous bases pair together?

A) adenine with thymine (in DNA) B) guanine with cytosine
C) Both A & B D) guanine with uraci
 
Answer & Explanation Answer: C) Both A & B

Explanation:
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Q:

Oxidation number of S8?

A) +1 B) -2
C) +2 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:

S8 is an elemental form of sufur. In elemental form it can't be reduced or oxidized. Hence, it oxidation number is zero and thus sulfur is zerovalent here.

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