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Q:

An element with an atomic number of ___ will form a basic oxide.

 

A) 20 B) 7
C) 6 D) 17
 
Answer & Explanation Answer: A) 20

Explanation:
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Filed Under: Chemistry
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2 17206
Q:

NH3 oxidation number?

A) -1 B) +1
C) 0 D) -3
 
Answer & Explanation Answer: C) 0

Explanation:

NH3, Ammonia is a neutral compound as the individual oxidation numbers elements that make up the compound NH3 are Nitrogen (N) and Hydrogen (H) sum to zero. 

We do not speak of the oxidation number of a molecule. We can speak of the oxidation numbers of the individual elements that make up the compound.

 

Here the oxidation number of Nirogen is -3 and that of Hydrogen is +1.

Now, NH3 = 1(-3) + 3(+1) = -3 + 3 = 0.

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Filed Under: Chemistry
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30 17205
Q:

Janapav hill situated near Indore is the source of which river?

 

A) Tapi river   B) Chambal river  
C) Mahi River D) Mahanadi
 
Answer & Explanation Answer: B) Chambal river  

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Filed Under: Indian Geography
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Q:

The absolute value of charge on electron was determined by

A) J.J.Thomson B) R.A. Millikan
C) Rutherford D) Chadwick
 
Answer & Explanation Answer: B) R.A. Millikan

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Q:

Improve the bracketed part of the sentence.

The footballers (has been) arguing with the coach since morning.

A) was B) had been
C) have been D) no improvement
 
Answer & Explanation Answer: C) have been

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Filed Under: English
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Q:

Improve the bracketed part of the sentence.

 

The speed with which (these hate crime videos travelling) on social media frames a difficult challenge for law enforcement authorities.

A) these hate crime videos travel B) this hate crime videos travel
C) these hate crime videos travelled D) No improvement
 
Answer & Explanation Answer: A) these hate crime videos travel

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Filed Under: English
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Q:

Rearrange the parts of the sentence in correct order.

 

In order to tone up

P : it should be

Q : the physical education programme,

R : reoriented and implemented

 

A) PQR B) PRQ
C) RQP D) QPR
 
Answer & Explanation Answer: D) QPR

Explanation:
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Filed Under: English
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Q:

What are the four things needed to connect to the internet?

A) telephone line, modem, computer, and an ISP B) modem, computer, PDA, and ISP
C) telephone line, modem, computer, and PDA D) computer, ISP, modem, and communication software
 
Answer & Explanation Answer: D) computer, ISP, modem, and communication software

Explanation:
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Filed Under: Computer
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106 17175