Dear Students,Science is an important part in GENERAL STUDIES of SSC CGL and CPO. In SSC CGL, 5-8 questions were asked from this part. So we provide 15 Questions of SCIENCE every day .We have provided Science Notes too.
Q1. An example of semiconductor is
(a) German silver
(b) Germanium
(c) Phosphorous
(d) Arsenic
Q2. The chief constituent of vinegar is
(a) Formic acid
(b) Acetic acid
(d) Oxalic acid
Q3. Sea weeds are important source of
(a) iron
(b) chlorine
(c) bromine
(d) iodine
Q4. The common name for the compound having formal NaOH is
(a) Caustic soda
(b) Caustic potash
(c) Soda ash
(d) Sodium hydroxide
Q5. A balloon filled with helium rises in air because
(a) air exerts an upward force on the balloon
(b) the balloon is weightless
(c) helium is less dense than air
(d) helium pushes down on the air below the balloon
Q6. Which of the following contains high content of lead?
(a) Coal
(b) Cooking gas
(c) High octane fuel
(d) Low octane fuel
Q7. The anode of a dry cell is made up of
(a) Iron
(b) Cadmium
(c) Zinc
(d) Lead
Q8. Electric bulbs are filled with:
(a) Nitrogen
(b) Carbon dioxide
(c) Argon
(d) Oxygen
Q9. The iron ore which contain 72% of iron is:
(a) Magnetic
(b) Limonite
(c) Haematite
(d) Siderite
Q10. Aspirin is chemically known as
(a) methyl salicylate
(b) hydroxysalicylate
(c) acetylsalicylic acid
(d) alkylsalicylic acid
Q11. Aqua regia is a 1 : 3 mixture, by volume, of
(a) conc. Nitric acid and conc. Hydrochloric acid
(b) conc. Hydrochloric acid and conc. Nitric acid
(c) conc. Nitric acid and conc. sulphuric acid
(d) conc. sulphuric acid and conc. nitric acid
Q12. The important ore of aluminium is
(a) bauxite
(b) cryolite
(c) fluorspar
(d) haematite
Q13. Vinegar made by fermentation from cane sugar contains
(a) palmitic acid
(b) lactic acid
(c) citric acid
(d) acetic acid
Q14. Major gaseous pollutant of the thermal power station is
(a) H_2 S
(b) NH_3
(c) NO_2
(d) SO_2
Q15. Commercially, sodium bicarbonate is known as
(a) Washing soda
(b) Baking soda
(c) Bleaching powder
(d) Soda ash
