Questions

Q:

Which one of the following can be oxidised to the corresponding carbonyl compound:

A) 2-methyl-2-hydroxy propane B) 2-hydroxy propane
C) o-Nitrophenol D) Phenol
 
Answer & Explanation Answer: B) 2-hydroxy propane

Explanation:
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Filed Under: Chemistry
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Q:

Leading communication app Truecaller has tied up with _________ to integrate the tech giant's video calling app Duo within the Truecaller app.

A) Infosys B) Facebook
C) TCS D) Google
 
Answer & Explanation Answer: D) Google

Explanation:

Leading communication app Truecaller has tied up with 'Google' to integrate the tech giant's video calling app Duo within the Truecaller app.

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Q:

12 year old Padmalaya Nanda from _________has created history by becoming the youngest girl to bag the "Little Miss Universe Internet 2017".

A) Haryana B) Gujarat
C) Karnataka D) Odisha
 
Answer & Explanation Answer: D) Odisha

Explanation:

12 year old Padmalaya Nanda from Odisha has created history by becoming the youngest girl to bag the two "Little Miss Universe Internet 2017" and "Little Miss Actress" crowns at the 'Little Miss Universe-2017' at port city of Batumi in Georgia. Padmalaya Nanda, who studies in the 8th standard at a school in Cuttack, Odisha, bagged the crowns at the finale of the little Universe 2017, held at port city of Batumi in Georgia on June 4, 2017.

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Q:

An instrusion of magma along a bedding plane is called a

A) Dyke B) Still
C) Batholith D) Laccolith
 
Answer & Explanation Answer: C) Batholith

Explanation:
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Q:

Chloroform used as anaesthetic should be preserved in the dark in tightly stoppered bottles because otherwise

A) it becomes coloured B) it gets evaporated in air
C) it gets oxidised to phosgene D) it gets decomposed to chloropicrin
 
Answer & Explanation Answer: C) it gets oxidised to phosgene

Explanation:

Chloroform, CHCl3 is easily oxidised to the highly poisonous gas known as phosgene or carbonyl chloride COCl2. Hence if it is used as anaesthetic it should be kept free from sunlight and air.

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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 idea of ‘Farr-i Izadi’, on which the Mughal kingship was based, was first developed by which one of the following Sufi saints?

A) Shihabuddin Suhrawardi B) Nizamuddin Auliya
C) Ibn al-Arabi D) Bayazid Bistami
 
Answer & Explanation Answer: A) Shihabuddin Suhrawardi

Explanation:

Abul Fazl placed Mughal kingship as the highest station in the hierarchy of objects receiving light emanating from God (farr-i izadi). Abul Fazl was inspired by a famous Iranian Sufi, Shihabuddin Suhrawardi who first developed this idea. According to this idea, there was a hierarchy in which the Divine Light was transmitted to the king who then became the source of spiritual guidance for his subjects.

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Filed Under: Indian History
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Q:

Source of river Mahanadi ?

A) Mahabaleshwar B) Trimbak Plateau
C) Dandakaranya D) None
 
Answer & Explanation Answer: C) Dandakaranya

Explanation:
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