2776: Artists are generally whimsical. Some of them are frustrated. Frustrated people are prone to be drug addicts. Based on these statements which of the following conclusions is true ?
(a) All frustrated people are drug addicts
(b) Some artists may be drug addicts
(c) All drug addicts are artists
(d) Frustrated people are whimsical
2777: The phenomenon of mirage is due to:
(a) Increased absorption of light by air at higher temperature
(b) Change in the refractive index of air with the change in temperature
(c) Total internal reflection
(d) Decreased absorption of light by air at higher temperature
2778: The identity platform `Aadhaar' provides open "Application Programming Interfaces (APIs)". What does it imply?
1. It can be integrated into any electronic device.
2. Online authentication using iris is possible.
Which of the statements given above is/are correct ?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2779: 6 equiddistant vertical lines are drawn on a board. 6 equidistant horizontal line are also drawn on the board cutting the 6 vertical lines, and the distance between any two consecutive horizontal lines is equal to that between any two consecutive vertical lines. What is maximum number of squares thus formed ?
(A) 56
(B) 44
(C) 37
(D) 55
2780: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced