4251: In a factory, quality assurance test is conducted on various samples for a specific characteristic value of the product. The values and the number of samples are as given in the following table :
Characteristic value, X No. of Samples
10 3
11 7
12 10
13 15
14 28
15 33
16 24
17 11
18 10
19 6
20 3
Consider the following statements based on the table :
I. The probability that X ≤ 15 is 0.64.
II. The probability that 13 < X ≤ 17 is greater than 0.64.
III. The probability that X = 15 is less than 0.22.
Which of the above statements is/are not true?
(a) I alone
(b) I and II
(c) II and III
(d) I, II and III
4252: Gypsum is added to the soil?
(a) To increase the alkalinity
(b) To decrease the acidity
(c) To decrease the alkalinity
(d) As an insecticide
4253: Sendeep Pandey, the winner of Raman Magsaysay Award, is mainly an activist in
(a) prevention of child marriages
(b) promotion of communal harmony
(c) environmental protection
(d) education and livelihood projects for Dalits
4254: In an electronic watch, the component corresponding to pendulum of a pendulum clock is a
(a) transistor
(b) crystal oscillator
(c) diode
(d) balance wheel
4255: Falun Gong is
(a) an ethnic minority in Eastern China
(b) an insurgency outfit in Western China
(c) a pro-democracy movement in China
(d) a spiritual movement in China