MEDIUM
RRB NTPC CBT 1
IMPORTANT
Earn 100

An alloy contains zinc, copper and tin in the ratio and another contains copper, tin and lead in the ratio . If equal weights of both alloys are melted together to form a third alloy, then the weight of lead per kg in the new alloy will be?
(a)
(b)
(c)
(d)

50% studentsanswered this correctly

Important Questions on Practice Set
EASY
RRB NTPC CBT 1
IMPORTANT
A can do a work in days and B in days. If they work on it together, then in how many days will they be able to do of the work?

EASY
RRB NTPC CBT 1
IMPORTANT
The ratio of the present ages of two brothers is and year back the ratio was . What will be the ratio of their ages after year?

EASY
RRB NTPC CBT 1
IMPORTANT
Between and , the minute hand of a clock will be ahead of the hour hand by at:

EASY
RRB NTPC CBT 1
IMPORTANT
Select the wrong number in a given series from the given alternatives.

MEDIUM
RRB NTPC CBT 1
IMPORTANT
A ate grapes and pineapple, B ate grapes and oranges, C ate oranges, pineapple and apple, and D ate grapes, apple and pineapple.
After taking fruits, B and C fell sick. In light of the above facts, it can be said that the cause of sickness was?

EASY
RRB NTPC CBT 1
IMPORTANT
Statement : The old order changed yielding place to new.
Conclusions
I. Change is the law of nature.
II. Discard old ideas because they are old.

MEDIUM
RRB NTPC CBT 1
IMPORTANT
A boy walks Northwards. After a while, he turns towards his right and a little farther to his left. Finally, after walking a distance of , he turns to his left again. In which direction, he is moving now?
(A) North (B) South (C) East (D) West

EASY
RRB NTPC CBT 1
IMPORTANT
Find the missing term from the given responses in the following question.
(A) (B) (C) (D)
