EASY
RRB JE CBT 1
IMPORTANT
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Two pipes A and B can fill an empty cistern in 18 hours and 27 hours, respectively. Pipe C can drain the entire cistern in 45 hours when no other pipe is in operation. Initially, when the cistern was empty pipe A and pipe C were turned on. After a few hours pipe A was turned off and pipe B was turned on instantly. In all, It took 55 hours to fill the cistern. For how many hours was pipe B turned on?

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Important Questions on Practice Set

MEDIUM
RRB JE CBT 1
IMPORTANT

Consider the statement and decide which of the given assumptions is/are implicit.  

Statement: 

A mother is crying in the hospital as her only son died in a road accident while driving his bike. 

Assumptions: 

(I) The mother thinks it's her own son's fault. 

(II) The mother thinks that God is not with her. 

MEDIUM
RRB JE CBT 1
IMPORTANT

Assuming that the numbers in each of the following figures a similar pattern, select the option that can replace the question mark (?) in figure (B).

Question Image

MEDIUM
RRB JE CBT 1
IMPORTANT
Which of the following glows with special colour depending on the nature of gas in the fluorescent tube? 
 
MEDIUM
RRB JE CBT 1
IMPORTANT
Metals are placed on which side of the Modern Periodic Table?
MEDIUM
RRB JE CBT 1
IMPORTANT
As of February 2018, who is the Indian-born CEO of Nokia company?
MEDIUM
RRB JE CBT 1
IMPORTANT
Metal oxides which react with acids, as well as bases are called : 
MEDIUM
RRB JE CBT 1
IMPORTANT
In a plant, which of the following is converted into a seed? 
 
EASY
RRB JE CBT 1
IMPORTANT
Which enables an electric current to flow in a circuit?