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How do we know that fission isn't responsible for the sun's energy ?

AFission doesn't produce enough energy per gram of fuel
BIf fission were going on in the sun, the sun would explode
CIf fission were going on in the sun, the sun's mass would increase
DThere isn't very much fissionable material in the sun.

Eight friends P, Q, R, S, T, U, V and W are sitting around a circle facing the centre. V is third to the right of Q and is second to the left of R. Q is second to the left of T and on the immediate right of S. U is between Q and T. P is not on the left of R. Which of the following is the correct position of W?

AOn the immediate left of V
BOn the immediate right of V
CBetween U and V
DOn the immediate right of R

Identify the rule followed in the number series given below.



AAdd 2 in previous term to get the next term
BMultiply previous term by 2 to get the next term
CSubtract 2, 4, ............ sequentially
DMultiply the number by itself to get the next term

Many inventors invented light bulbs, but it was him who invented an incandescent bulb that could burn for a long time. He was also the first inventor to be awarded a patent for this invention. Identify him.


ASamuel Morse
BAlexander Graham Bell
CThomas Alva Edison
DJohn Logie Baird

What is the standard form of 7,000 + 800 + 20 + 5?

A7,285
B7,825
C7,852
D7,528

Kartik can throw a ball metres high. Ayan can throw the same ball metres high. How much farther can Kartik throw the ball than Ayan?

A
B
C
D

Refer to the diagram of the human digestive system to answer the following question. What would be the likely consequence of swapping S and T i.e., from the stomach, food will pass through T to S?


AThe digestive enzymes would be denatured.
BThe intestinal contents would be highly alkaline and would damage the wall of T.
CThe intestinal contents would be too dry and unable to pass through S properly.
DWater absorption would be highly reduced.

Which of the following is the most environment- friendly way of bathing?

AShowering for 20 minutes thrice a day
BUsing a bucket of water
CShowering for 10 minutes twice a day
DSitting under the running tap for 10 minutes

Nihal celebrates his birthday on the next day of third Friday of August 20XX. The date after his birthday will be ______.

(IMO 2015)



A20th August
B19th August
C26th August
D27th August

What is the prime factorization of 45?

A2³ × 5
B3² × 5
C5² × 3
D5² × 9