71: Death penalty for drug smuggling is given in:
(a) Thailand
(b) Singapore
(c) Malaysia
(d) Bangladesh
72: Examine the following statements regarding a set of balls :
I. All balls are black.
II. All balls are white.
III. Only some balls are black.
IV. No balls are black.
Assuming that the balls can only be black or white, which two statements given above can both be true, but cannot both be false ? Choose the correct answer from the codes given below :
Codes :
(a) I and IV
(b) I and III
(c) II and III
(d) III and IV
73: Total internal reflection occurs when light travels from:
(a) A rarer medium to a denser medium
(b) A denser medium to a rarer medium
(c) A rarer medium to a denser medium and the angle of incidence is less than the critical angle
(d) A rarer medium to a denser medium and the angle of incidence is greater than the critical angle
74: Which of the following Asian languages are UN official languages?
(a) Chinese and Japanese
(b) Chinese and Arabic
(c) Japanese and Arabic
(d) Chinese and Hindi
75: A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. What will be the respective remainders if it is successively divided by 5 and 4?