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Q:

Select the antonym of

to envisage

 

A) oblivious B) to apprehend
C) to confront D) to visualize
 
Answer & Explanation Answer: A) oblivious

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Q:

In which country 'The SolarWinds hack', a cyber attack was recently discovered?

 

A) China B) Russia
C) US D) Japan
 
Answer & Explanation Answer: C) US

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Filed Under: General Awareness
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Q:

The first space rocket to hit the moon was 

A) Apollo II B) Luna 9
C) Lunik 2 D) Zond 5
 
Answer & Explanation Answer: A) Apollo II

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Q:

The atoms of the elements having same mass number but different atomic number are called

A) Isotopes B) Isobars
C) Isotones D) Isomers
 
Answer & Explanation Answer: B) Isobars

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Filed Under: Chemistry

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Q:

Which reaction occurs spontaneously?

A) Cl2(g) + 2NaF(aq)--> F2(g) + 2NaCl(aq) B) I2(s) + 2NaF(aq)--> F2(g) + 2NaI(aq)
C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq) D) I2(s) + 2NaBr(aq)--> Br2(l) + 2NaI(aq)
 
Answer & Explanation Answer: C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq)

Explanation:

In this chemical reaction chlorine change oxidation number from 0 to -1 (reduction) and bromine change oxidation number from -1 to 0 (oxidation).

Chlorine is stronger oxidation reagent than bromine.

In VIIA or group 17 (halogen elements) there are six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennessin(Ts).

They have high electronegativity because they have seven valence electrons in their outermost energy level, so they can gain an electron to have the octet rule.  

Going down in the group, element are weaker oxidazing reagent and less reactive.

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Q:

The Buddhist  Doctrines were written in 

A) Sanskrit B) Pali
C) Tibetan D) Not written in any language but orally transnitted
 
Answer & Explanation Answer: B) Pali

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Filed Under: Indian History

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Q:

Who among the following is NOT a dancer of Odissi?

 

A) Sanjukta Panigrahi   B) Sonal Mansingh  
C) Madhavi Mudgal   D) Yamini Krishnamurthy  
 
Answer & Explanation Answer: D) Yamini Krishnamurthy  

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Q:

The universal donor belongs to blood group

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

Explanation:

The persons with 'O' blood group do not have antigens in the red corpuscles. So that blood will not cause agglutination of corpuscles if mixed with any type of blood. So group 'O' persons are called universal donors.

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