GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 076

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 076

751). Alpha rays carry
A). 2 units of +ve charge
B). 1 unit of +ve charge
C). 1 unit of -ve charge
D). no charge

Answer: 2 units of +ve charge


   
752). Which one of the following enzymes brings about the hydrolysis of cane sugar to glucose and fructose?
A). invertase
B). zymase
C). diastase
D). lipase

Answer: invertase


   
753). Mention the chemical which is a food preservative
A). Sodium carbonate
B). Sodium bicarbonate
C). Sodium thiosulphate
D). Sodium benzoate

Answer: Sodium benzoate


   
754). The noble gas is
A). nitrogen
B). oxygen
C). Chlorine
D). neon

Answer: neon


   
755). Which is the heaviest metal?
A). mercury
B). iron
C). nickel
D). osmium

Answer: mercury


756). The element named after the sun is
A). oxygen
B). neon
C). helium
D). iodine

Answer: helium


   
757). The valency of phosphorus in PCI3 is
A). 2
B). 3
C). 4
D). 5

Answer: 3

   
758). Which one of the following statements is correct?
A). mass of a proton - mass of a neutron
B). charge of an electron - charge of a neutron
C). mass of an electron - mass of a proton
D). charge of a proton - charge of a neutron

Answer: mass of a proton - mass of a neutron


   
759). Acid rain is caused by
A). CO and CO2
B). CO2 and O3
C). N2 and CO2
D). N2O and SO2

Answer: N2O and SO2



   
760). Stainless steel is an alloy of
A). iron and nickel
B). iron, chromium and nickel
C). iron, chromium and zinc
D). iron and manganese

Answer: iron, chromium and nickel