Daily Quiz: UPSC Prelims Marathon – April 11, 2019

Most of the desert plants bloom during night time because of very high temperature in day time, the desert insects are active during night time which help in pollination

All proteins are formed of amino acids that contains elements viz. Carbon, Hydrogen, oxygen and Nitrogen.

Optical fibres works on the principle of total internal reflection (TIR), when light in incident at an angle greater than critical angle at one end, it gets refracted and gets incident on the interface of fibere and its coating. This makes light to suffer multiple total internal reflections.

Deficiency of following vitamins causes the given diseases:

• Vitamin A – Night-Blindness
• Vitamin B – Beri-beri
• Vitamin C – Scurvy
• Vitamin D – Rickets

Scientific Names of following Vitamins are:

• Vitamin A – Retinol
• Vitamin B1 – Thiamine
• Vitamin B2 – Riboflavin
• Vitamin B3 – Niacin
• Vitamin B6 – Pyridoxine
• Vitamin B12 – Cyanocobalamin
• Vitamin C – Ascorbic Acid
• Vitamin D – Cholecalciferol
• Vitamin E – Tocopherol
• Vitamin K – Phylloquinone

Prithvi II is an indigenously developed nuclear capable missile. With a strike range of 350 km, the Prithvi-II is capable of carrying 500 kg to 1,000 kg of warheads and is thrusted by liquid propulsion twin engines. It uses advanced inertial guidance system with manoeuvring trajectory to hit its target. It is a short range surface to surface missile.

Inducted into Indian armed forces in 2003, the nine-metre-tall, single-stage liquid-fuelled Prithvi-II is the first missile to be developed by the DRDO under the Integrated Guided Missile Development Programme.

Project Loon is a research and development project being developed by X (formerly Google X) with the mission of providing Internet access to rural and remote areas. Aquila by Facebook is a solar power plane that beams internet connectivity from the Sky. White Fi by Microsoft uses unused spectrum to provide connectivity.