2516: The following figure represents time vs. learning curves of two students, Q and R for learning a Mathematics lesson :


Which one of the following inferences can be drawn from the graph ?

(a) R started slowly in the beginning but got ahead of Q to complete learning the lesson
(b) Q started slowly and finished learning the lesson earlier than R
(c) R was always faster than Q in learning Mathematics
(d) Q was always faster than R in learning Mathematics
2517: The great Indian bustard is a/an:

(a) Animal

(b) Reptile

(c) Bird

(d) Mammal
2518: With reference to National Investment and Infrastructure Fund, which of the following statements is/are correct?

1. It is an organ of NITI Aayog.
2. It has a corpus of Rs. 4, 00,000 crore at present.

Select the correct answer using the code given below:

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2519: Galvanised iron sheets are protected from rusting due to the presence of a layer of

(a) lead

(b) chromium

(c) zinc

(d) tin
2520: In a school, out of 40 staff members, 30 are males. Some of the female teachers can sing while no male can sing. The principal invited six persons to a party by drawing lots. It was found that no member in the party could sing. Which of the following conclusions can be definitely drawn?

(a) Only males were invited to the party

(b) Some of the invitees were males and some were females who could not sing

(c) Only females, who could not sing, were invited to the party

(d) None of the above