Ans: d
Expl:
• Anode, cathode, electrolyte and separator are the main components of a lithium-ion (rechargeable) battery.
• The two electrodes are immersed in the electrolyte and are separated by the separator.
• The anode is usually made up of graphite (carbon).
• Carbon graphite has a layered structure that can store the lithium ions in between its layers.
• The cathode is made up of a combination of lithium-cobalt.

Ans: c
Expl:
• Ministry of Mines is setting up a joint venture company namely Khanij Bidesh India Ltd. (KABIL)
• It will be set up with the participation of three Central Public Sector Enterprises namely,
1. National Aluminium Company Ltd. (NALCO)
2. Hindustan Copper Ltd. (HCL)
3. Mineral Exploration Company Ltd. (MECL)
• The equity participation between NALCO, HCL and MECL is in the ratio of 40:30:30
• The Indian government has identified twelve minerals as strategic minerals that have a small resource base. Among these minerals, the most significant ones include Lithium and Cobalt.
• Recalling the commitment at the UN Climate Change Conference, Pairs, 2015, where India has pledged to reduce greenhouse gas emissions and opting for a greener mode of transportation by emphasizing upon Electric Vehicle Mobility.
• It is therefore important to ensure energy storage through batteries

Ans: b
Expl: Saudi Arabia is bordered by Jordan and Iraq to the north, Kuwait to the northeast, Qatar, Bahrain, and the United Arab Emirates to the east, Oman to the southeast and Yemen to the south; it is separated from Egypt and Israel in the north-west by the Gulf of Aqaba.

Ans: c
Expl: The ideal temperature for Tea’s growth is 20º C to 30º C while the ideal temperature for Coffee’s growth is 15º C to 28ºC.

Ans: b
Expl: The flight data recorder and cockpit voice recorder, or black boxes as they are often called, store data about planes. They can provide vital information in air accident investigations.