CTET Solved Paper - CTET September 2016 Paper2
56. Which of the following is not a contributing factor responsible for Mathematics anxiety?
- Option : A
- Explanation : Gender is not related to Mathematics. So, except gender all others could be responsible for Mathematics anxiety.
58. If (132 - 52)3/2 = 63 x A, then the value of A is
- Option : D
- Explanation : (132 - 52)3/2 = 63 x A
⇒ ⌈(13-5) (13+5)⌉3/2 = 63 x A (since a2 - b2 = (a - b) (a + b))
⇒ (8 x 182)3/2 = 63 x A
⇒ (2 x 2 x 2 x 2 x 3 x 30)3/2 =63 x A
⇒ (2 x 2 x 3)3 = 63 x A
⇒ A = 123 / 63 =(12/6)3
⇒ A = 23
59. If x√243 = y√867, where x and y are co-prime numbers, then the value of (x - y) is
- Option : B
- Explanation : x√243 = y√867
x/y = √867/243 = √289/81 = 17/9
⇒ x = 17/9 x y
If y = 9, then x = 17/9 x 9 = 17
9 and 17 are co-prime numbers
⇒x - y
⇒x - y = 17 - 9 = 8
DIRECTIONS (Q. Nos. 73-75) Read the following passage carefully and give the answer.
A teacher of Class VII demonstrates the following activity in her class
“The teacher takes a small amount of sulphur in a spoon and burns it. She then puts the spoon into a tumbler with a lid to ensure that the gas produced does not escape. After a few minutes, she adds water to the tumbler.”
60. What happens if blue and red litmus papers are put into the tumbler?
- Option : A
- Explanation : When sulphur is burned in air, it forms sulphur dioxide gas.When sulphur dioxide reacts with water, it forms sulphurous acid which turns blue litmus red.
