Questions

Q:

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of :

A) An acetylenic triple bond B) Two ethylenic double bonds
C) A vinyl group D) An isopropyl group
 
Answer & Explanation Answer: C) A vinyl group

Explanation:

C=}CH2OzonolysisHCHO

Vinylic group.

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Filed Under: Chemistry
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Q:

Why are viruses considered to be nonliving?

A) Viruses have no metabolic activity. B) Viruses don't have any cells, like living organisms.
C) Viruses can't produce new proteins, DNA, or RNA. D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Viruses are responsible for some of the most dangerous and deadly diseases including influenza, ebola, rabies and smallpox.

Despite their potential to kill, these potent pathogens are in fact considered to be non-living.

 

Reasons:

1. Viruses don't have any cells, like living organisms do. They have protein coats but no organelles or other cellular machinery. Just a little DNA packet.

2. Viruses can't produce new proteins, DNA, or RNA and therefore are unable to reproduce on their own. They need infected cells' machinery to make all of these and produce new virons.

3. Viruses have no metabolic activity. They don't use or convert energy and have no ongoing interior processes. They're basically just inert structures until they impact a potential host cell.

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Filed Under: General Science
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Q:

Transpiration in plants does helps in which of the following?

 

A) Absorption and upward movement of water B) Absorption and upward movement of minerals dissolved in water  
C) Temperature regulation D) All options are correct
 
Answer & Explanation Answer: D) All options are correct

Explanation:
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Filed Under: General Science
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Q:

In which categories did Marie Curie win her two different Nobel Prizes

A) Physics and chemistry B) Chemistry and Medicine
C) Physics and Medicine D) Chemistry and Peace
 
Answer & Explanation Answer: A) Physics and chemistry

Explanation:
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Filed Under: Honours and Awards

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Q:

Controlling marketing activities :

What does monitoring and controlling marketing activities entail?

Answer

All those activities which have been planned out by the marketing department must be tried out in the market several times in order to be able to conclude if such activities are worthwhile or not. Such activities may be repeated several times over a period say six months or a year in order to be able to decide whether to stick to them or replace them with other better alternatives. Monitoring and controlling the marketing activities entails keeping proper records of the various activities and tracking them time and again particularly when it comes to the media, when to promote the product, cost factor, reach or the number of persons towards whom the promotions have been targeted, responses generated, sales generation and return on sales

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Q:

Oxidation Number of 'S' in H2SO4?

A) +6 B) +2
C) -6 D) -2
 
Answer & Explanation Answer: A) +6

Explanation:

In H2SO4,

Hydrogen has a charge of +2, with each hydrogen has +1.

Oxygen has  a charge of -8, with each oxugen has -2.

Total charge = (2 - 8) = -6

Therefore, the Oxidation number of Sulphur S is '+6' because to make the compound stable.

 

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Filed Under: Chemistry
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Q:

Select the antonym of

void

 

A) destitute B) scant
C) bereft D) adequate
 
Answer & Explanation Answer: D) adequate

Explanation:
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Filed Under: English
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Q:

The Capital of Tanzania is 

A) Nairobi B) Lusaka
C) Kampala D) Dar- es- Salaam
 
Answer & Explanation Answer: D) Dar- es- Salaam

Explanation:
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Filed Under: Country Capitals

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