1691: Consider the following statements :
Glass can be etched or scratched by
I. diamond.
II. hydrofluoric acid.
III. aquaregia.
IV. cone, sulphuric acid.
Which of these statements are correct ?
(a) I and IV
(b) II and III
(c) I and II
(d) II and IV
1692: What was the reason for 5 lakh people of Hong Kong to make a demonstration around the middle of 2003?
(a) They were demanding tax relief.
(b) They were against the Hong Kong Government's plan to impose an internal security law.
(c) They were the members of Falun Gong group who were demanding religious freedom.
(d) They were demanding more direct elections in Hong Kong.
1693: Kahuta is:
(a) A bird sanctuary in Tamil Nadu
(b) A tribe of Mizoram
(c) A place in Pakistan where nuclear research centre is located
(d) None of the above
1694: Which are the materials generally employed as solder in soldering operation in elections.
(a) Iron and tin
(b) Lead and tin
(c) Aluminum and lead
(d) Aluminum and iron
1695: Consider the following statements regarding Earth Hour :
1. It is an initiative of UNEP and UNESCO.
2. It is a movement in which the participants switch off the lights for one hour on a certain day every year.
3. It is a movement to raise the awareness about the climate change and the need to save the planet.
Which of the statements given above is/are correct?
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3