2996: The age of a man is three times the sum of the ages of his two sons. Five years hence, his age will be doubled of the sum of the ages of his sons. The father's present age is
(a) 40 years
(b) 45 years
(c) 50 years
(d) 55 years
2997: Graphene is frequently in news recently. What is its importance?
1. It is a two-dimensional material and has good electrical conductivity.
2. It is one of the thinnest but strongest materials tested so far.
3. It is entirely made of silicon and has high optical transparency.
4. It can be used as 'conducting electrodes' required for touch screens, LCDs and organic LEDs.
Which of the statements given above are correct?
(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2 and 4 only
(d) 1, 2, 3 and 4
2998: HINDALCO, an aluminium factory located at Renukut owes its site basically to
(a) proximity of raw materials
(b) abundant supply of power
(c) efficient transport network
(d) proximity to the market
2999: India is home to lakhs of persons with disabilities. What are the benefits available to them under the law?
1. Free schooling till the age of 18 years in government-run schools.
2. Preferential allotment of land for setting up business.
3. Ramps in public buildings.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
3000: Finance Commission is appointed for:
(a) Passing the money bills
(b) Approving money bills
(c) Drafting the budget
(d) Making recommendations to the President regarding the distribution between the Union and the States of the net proceeds of the taxes