3941: In a wooden box there are 3 red and 4 black balls. If two balls are taken out Simultaneously (without looking at them), then the probability of both the balls being red is
(a) Zero
(b) 1/7
(c) 2/7
(d) 3/7
3942: Total internal reflection can take place when light travels from
(a) diamond to glass
(b) water to glass
(c) air to water
(d) air to glass
3943: Consider the following statements
1. Vardhaman Mahavira's mother was the daughter of Lichchhavi chief Chetaka.
2. Goutama Buddha's mother was a princess from the Kosha-lan dynasty.
3. Parshvanatha, the 23rd Tirthankara, belonged to Banaras.
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) 2 and 3
(d) 1, 2 and 3
3944: The language spoken by the largest number of people in the world is
(a) Hindi
(b) English
(c) Mandarin
(d) Spanish
3945: Which one of the following statements is not correct?
(a) The Western Ghats are relatively higher in their northern region.
(b) The Anai Mudi is the highest peak in the Western Ghats.
(c) Tapi river lies to the south of Satpura.
(d) The Narmada and the Tapi river valleys are said to be old rift valleys.