966. Downs syndrome is also known as
– Trisomy 21. 

967. Electromagnetic Induction was discovered by 
– Michael Faraday 

968. An element having the name that means ‘Earth’ 
– Tellurium 

969. Element used as coolant in nuclear reactors 
– Liquid sodium 

970. Element used to get green flames in fireworks 
– Barium

971. Elements with atomic number 57 – 71 are known as 
– Lanthanides (rare earth) 

972. Energy currency of the cell 
-ATP 

973. Explosive known as ‘cyclonite’ 
–  RDX

974. Explosive known as ‘trotyl’ 
-TNT

975. Fluid pressure inside eyes are measured by using a 
– tonometer.

976. Formation of mirage and the principle behind optic fibres 
-total internal reflection. 

977. Fred Cohen coined the word 
– computer virus.

978. Wonder metal -Titanium.The fuel of future – Hydrogen, Metal of future
– Titanium, 

979. ……………….. is related to the electoral outcome. 
– Gallagher Index

980. Geostationary orbit is at a height of 
– 36,000 Km. 

981. German silver is an alloy of 
– zinc, copper and nickel.

982. ………………. is the only animal born with horns. 
– Giraffe

983. Glass used to make electric bulbs, lenses and prisms 
– Flint glass 

984. Glass used to make test tube, window panes and bottles 
-Soda glass 

985. Glass used to make Thermometer 
– Pyrex glass 

986. Glass used to make thermos flask 
– Borosilicate glass. 

987. …………….. contains the list of rare plant species. 
– Green databook

988. Green Vitriol
– Ferrous Sulphate

989. Gun Metal
– Copper, Tin, Zinc 

990. Invar
– Iron, Nickel 

991. ……………… is produced by the Girdler sulfide process. 
– Heavy water

992. Honeydew, Washington is a variety of 
– papaya. 

993. A hormone which is also called ADH (Anti Diuretic Hormone) 
–  Vasopressin.

994. Hydrogen and Oxygen are named by 
– Lavoisier

995. Hydrogen Chloride is known as 
– ‘Salt gas’ 

996. The instrument used in submarines to view the surface of the water is 
– periscope. 

997. …………………. is a mixture of potassium iodide and common salt. 
– Iodized salt

998. ………………… are lines on map connecting points having an equal amount of rainfall in a given period.
– Isohyets

999. —————- is India’s first fast breeder nuclear reactor.
– Kamini

1000. ————————- commonly used to define the boundary between Earth’s atmosphere and outer space. 
– Karman Line