816. Which acid is present in colas? Phosphoric Acid
817. Which optical filter glass allows ultraviolet & infrared light to pass through while blocking most visible light?
Wood's Glass
818. Which is the only gem of the world made of a single element?
Diamond
819. Name the volcanic rock best known for sometimes containing diamonds?
Kimberlite
820. Which chemical is used to draw & write in the glasses?
Hydrofluoric Acid
821. Which chemical was historically known as 'white vitriol & goslarite'?
Zinc Sulphate
822. Which metal is commercially produced through the FFC Cambridge Process?
Titanium
823. Which metal is extracted via Kroll Process or the Hunter Process?
Titanium
824. The substance which is a chemical compound that tends to shrink or constrict body tissues, usually after topical medicinal application is known as ?
Astringent
825. Which Indian mathematician is called as 'the Euclid of India'?
Bhaskaracharya
826. Which thermoplastic polymer is used in a wide variety of applications including packaging, labelling, stationery, loudspeakers & polymer banknotes?
Polypropylene
827. Which gas is mostly used in the gas welding?
Acetylene
828. Which country mostly rely on nuclear power with 78 percentage of total energy production from nuclear electricity?
France
829. Which compound of Titanium is used in the manufacture of white pigments?
Titanium dioxide
830. Which country leads in the production of Platinum?
South Africa
831. Which metal is known as 'Little Silver'?
Platinum
832. Which element is named for the Earth?
Tellurium
833. Which compound of Selenium is used as an anti-dandruff agent in shampoos?
Selenium disulfide
834. Which add is capable of dissolving gold?
Selenic acid
835. The compounds of which element confer red color to glass?
Selenium
836. Which element inhibit Hashimote's disease which affects thyroid cells?
Selenium
837. What is known as the 'Poisoner's Poison'?
Thallium
838. Which metal is also known as Wolfram?
Tungsten
839. among labourers during the construction of the Panama Canal?
Yellow fever
840. What is the optimum range of temperature for the proper work of enzymes?
35-40 degree Celsius
841. 2, 4- D, atrazine & glyphosate are examples of .
Herbicides (weed killers)
842. According to Botanical Survey of India, which state accounts for the highest number of flowering plants in the country?
TamilNadu
843. The plants which flower only once in their lifetime are called .
Monocarpic
844. Ageing in human beings is caused by the disappearance of which gland?
Thymus gland
845. The process involved in the passage of food in alimentary canal is .
Peristalsis
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