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Q:

Which element has the lowest ionization energy?

A) He B) Ne
C) Fr D) Rb
 
Answer & Explanation Answer: C) Fr

Explanation:

Ionisation energy is the energy required to remove one mole of electrons from one mole of gaseous atoms. Atoms are more stable when they have full valence shells.


The ionization energy decreases from top to bottom in groups, and increases from left to right across a period.

 

HGence, in this trend Francium (Fr) has the lowest ionization energy.

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Q:

Which of the following is also known as Carbolic Acid?

A) Phenol B) Hydroxide
C) Sulphuric Acid D) Ethanol
 
Answer & Explanation Answer: A) Phenol

Explanation:
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Q:

In the following question, the sentence given with blank to be filled with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

Ignoring someone in pain is an ______ act

A) immortal B) aggravating
C) immoral D) fecund
 
Answer & Explanation Answer: A) immortal

Explanation:
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Q:

If an electron and a photon have the same wavelength, then they will have the same

A) velocity B) linear momentum
C) angular momentum D) energy
 
Answer & Explanation Answer: B) linear momentum

Explanation:
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Q:

Energy travels from Sun to Earth through

A) conduction B) convection
C) radiation D) modulation
 
Answer & Explanation Answer: C) radiation

Explanation:
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Q:

Find arc elasticity of demand, if quantity demanded falls from 1000 to 950 when price of the item is increased from Rs. 240 to Rs. 280?

A) 0.33 B) 0.3
C) -0.3 D) -0.33
 
Answer & Explanation Answer: D) -0.33

Explanation:
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Q:

Which country is the world's largest silver producer?

A) Mexico B) Peru
C) Russia D) China
 
Answer & Explanation Answer: A) Mexico

Explanation:

The world's largest silver producer is Mexico.

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Q:

Which company received the award as one of the 2019 World’s Most Ethical Companies?

A) Tata Steel B) Reliance Industries
C) ITC Limited D) Infosys
 
Answer & Explanation Answer: A) Tata Steel

Explanation:

Among the given options, Tata Steel company received the award as one of the 2019 World’s Most Ethical Companies.

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