Questions

Q:

The Budget proposals also seek to provide relief to salaried tax payers by allowing a standard deduction of what amount in place of the present exemption allowed for transport allowance and reimbursement of miscellaneous medical expenses?

A) Rs. 20,000 B) Rs. 40,000
C) Rs. 50,000 D) Rs. 80,000
 
Answer & Explanation Answer: B) Rs. 40,000

Explanation:

The standard deduction of Rs. 40,000 is seek to provide relief to salaried tax payers in the Budget proposals in place of the present exemption allowed for transport allowance and reimbursement of miscellaneous medical expenses.

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Filed Under: Indian Economy
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Q:

In a first instance of foreign oil company planning to list in the Indian Capital market, a well-known energy company has announced to go in for IPO to be listed on BSE. Name of the exploration and production company is 

A) Unocol B) Shell
C) British Petroleum D) Cairn Energy
 
Answer & Explanation Answer: D) Cairn Energy

Explanation:
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Filed Under: Business Awareness

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Q:

Movement of cell against concentration gradient is called

A) active transport B) diffusion
C) osmosis D) passive transport
 
Answer & Explanation Answer: A) active transport

Explanation:

The only transport method that can move species against their concentration gradient i.e, from low to high concentration is called Active transport.

 

Facilitated diffusion only moves species down their concentration gradient i.e, from high to low concentration.

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Filed Under: Biology
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Q:

Cognitive neuroscientists can examine the brain with

A) PET & MRI B) Gama images & electrolysis
C) electrolysis & PET D) MRI & electrolysis
 
Answer & Explanation Answer: A) PET & MRI

Explanation:
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Filed Under: General Science
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Q:

Who became the first wicketkeeper in world cricket to effect 100 stumpings in ODI's in 2017 ?

A) Mahendra Singh Dhoni B) Kumar Sangakkara
C) Mark Boucher D) Adam Gilchrist
 
Answer & Explanation Answer: A) Mahendra Singh Dhoni

Explanation:

Former India captain Mahendra Singh Dhoni became the first wicketkeeper in world cricket to effect 100 stumpings in One Day Internationals. He broke the record of former Sri Lankan captain Kumar Sangakkara.

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Q:

Most absorption of nutrients occurs in the

A) Stomach B) Liver
C) Large intestine D) Small intestine
 
Answer & Explanation Answer: D) Small intestine

Explanation:

The small intestine is the main area of the GI tract for absorption.

 

The small intestine has three separate sections. Theyare :

1. The duodenum

2. Jejunum and

3. Ileum.

 

Hence, the majority of nutrient absorption occurs in the duodenum and jejunum of small intestine.

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Filed Under: Biology
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Q:

The lining of the marrow cavity is

A) Endosteum B) Sarcolemma
C) Episteum D) Periosteum
 
Answer & Explanation Answer: A) Endosteum

Explanation:

The marrow cavity is also known as the medullary cavity. It is the central cavity of bone shafts where adipose tissue is stored. It is lined with a thin, vascular membrane called endosteum.

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Q:

Which of the following reactions are redox reactions?

A) Ba(s)+Cl2(g)--->BaCl2(s) B) Mg(s)+Br2(l)--->MgBr2(s)
C) Al(s)+3Ag^+(aq)--->Al^3+(aq)+3Ag(s) D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A redox reaction is a type of reaction which involves transfer of electrons among two species. This reaction is also called oxidation-reduction reaction.

In oxidation process, there is an increase in oxidation state of an atom, ion or molecule by losing the electrons.

In reduction process, there is a decrease in oxidation state of an atom, ion or molecule by accepting the electrons.

1)

image

In this reaction, Ba undergoes oxidation and Cl undergoes reduction.
This reaction is redox reaction.
In this reaction, oxidation number of Ba increases from 0 to +2 . So, Ba undergoes oxidation. The oxidation number of Cl decreases from 0 to -1. So, Cl undergoes reduction.

 

2) 

 

image

From this above reaction, it is clear that Aluminum undergoes oxidation and silver undergoes reduction.
Due to this, this reaction is redox reaction.

In this reaction, oxidation number of Aluminum increases from 0 to +1. So, aluminum undergoes oxidation. The oxidation number of silver decreases from +1 to 0. So, silver undergoes reduction.

 

3)


image

In this reaction, Mg undergoes oxidation and Br undergoes reduction.
This reaction is redox reaction.
The reactions 1, 3 and 4 are redox reactions.
In this reaction, oxidation number of Mg increases from 0 to +2 . So, Mg undergoes oxidation. The oxidation number of Br decreases from 0 to -1 . So, Br undergoes reduction.

 

Hence all the above reactions are redox reactions.

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Filed Under: Chemistry
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