Q. Ammonia gas is used as a coolant in
A)  air cooler  
B)  air conditioners  
C) refrigerators  
D) water heaters
Q. the marked price of watch was Rs. 820. A man bought the watch for 570.72 after getting two successive discounts if the first was 20%, then second discount was
A) 18%
B) 15%
C) 13%
D) 11%
Q.  In human  body vitamin A  is used in 
A) kidney
B) Pancreas
C) Lungs
D) heart
Q. The average age of 28 students of a class is 12. if their teacher is joined,their average increases by one year.find the age of the teacher.
A) 40 years
B) 39 years
C) 41 years
D) 38 years
Q. 108:27:776:?
A) 162
B) 194
C) 137
D) 147
Q. A boat covers 5km upstream or 25 km downstream in an hour. what distance would it cover in 2hrs in still water
A) 15km
B) 20km
C) 25km
D) 30km
Q. if pipe A is 50% faster than C and pipe B is 25% slower than A in filling water in a tank. if all the 3 fill together in1hr 20 min. in what time A alone can fill the tank.  
A) 3.22 hours
B) 4 hours
C) 5.5 hours
D) 6 hours
Q. If on an item a company gives 25% discount, they earn 25% profit. If they now give 10% discount then what is the profit percentage.
A) 40%
B) 55%
C) 35%
D) 30%
Q. The first 5  odd natural numbers are written in every possible order.How many numbers can be formed if no repetition is allowed and what is their sum?
A) 5!,6666600
B) 51,6666
C) 51,55555
D) None of these
Q. one astronomical unit is the average distance between
A) earth and sun
B) earth and the moon
C) Jupiter and the sun
D) Pluto and the sun
Today Challenging Question
Q. If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream ?
A) 13 km/hr
B) 26 km/hr
C) 34 km/hr
D) none of these
2 members solved
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