2516: 'Project Loon', sometimes seen in the news, is related to
(a) waste management technology
(b) wireless communication technology
(c) solar power production technology
(d) water conservation technology
2517: On multiplying a number by 3, the product is a number each of whose digits is 7. What is the smallest such number?
2518: What is the purpose of 'Vidyanjali Yojan'?
1. To enable the famous foreign educational institutions to open their campuses in India.
2. To increase the quality of education provided in government schools by taking help from the private sector and the community.
3. To encourage voluntary monetary contributions from private individuals and organizations so as to improve the infrastructure facilities for primary and secondary schools.
Select the correct answer using the code given below :
(a) 2 only
(b) 3 only
(c) 1 and 2 only
(d) 2 and 3 only
2519: A body is attached to a spring balance suspended from a stand. The reading on the balance is 0.5 kg. The two together are detached from the stand and allowed to fall through a height. While falling the reading in the balance will be
(a) Zero
(b) Less than 0.5 kg but not zero
(c) More than 0.5 kg depending on the height
(d) 0.5 kg
2520: Consider the following statements:
1. Between Census 1951 and Census 2001, the density of the population of India has increased more than three times.
2. Between Census 1951 and Census 2001, the annual growth rate (exponential) of the population of India has doubled.
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