GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 028

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 028

271). In oil wells, oil, water and gas are present in the ascending order
A). gas, oil, water
B). water, oil, gas
C). water, gas, oil
D). oil, gas, water

Answer: water, oil, gas


   
272). The use of gypsum is recommended mainly in soils which are
A). alkaline
B). saline
C). water-logged
D). acidic

Answer: alkaline


   
273). Drinking soda is
A). neutral
B). an oxidizing agent
C). acidic in nature
D). basic in nature

Answer: acidic in nature


   
274). A mixture of two or more metals is called by the general name
A). amalgam
B). alkali metal
C). noble metal
D). alloy

Answer: alloy


   
275). A drug that prevents infection and decay is called a/an
A). antiseptic
B). antimalarial drug
C). germicide
D). analgesic

Answer: antiseptic

276). An antipyretic is a drug that
A). lowers body temperature
B). raises body temperature
C). kills infection
D). is used in viral attacks

Answer: lowers body temperature


   
277). Half life of radioactive substance is 60 min; during 3 hrs, the fraction of 
total no. of atoms that would have decayed would be
A). 0.125
B). 0.25
C). 0.085
D). 0.875

Answer: 0.875


   
278). A chemical compound made from only two elements is
A). binary
B). bicarbonate
C). tertiary
D). amphoteric

Answer: tertiary

   
279). The branch of chemistry that deals with living systems is known as
A). organic chemistry
B). physical chemistry
C). biological chemistry
D). inorganic chemistry

Answer: biological chemistry


   
280). Boric acid is a/an
A). mild antiseptic
B). germicide
C). strong antiseptic
D). antibiotic

Answer: mild antiseptic