GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 115

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 115

1141). Formalin is an aqueous solution of

A). methanol

B). methanal

C). propanone

D). ethanol

Answer: methanal

   

1142). Which of the following is weak acid?

A). HCl

B). CH2COOH

C). HNO3

D). H2SO4

Answer: CH2COOH

   

1143). ...................is used in the manufacture of artificial leather

A). Ketone

B). Acetone

C). Aldehyde

D). Acitic acid

Answer: Acetone

   

1144). The greenhouse gas is

A). O2

B). H2

C). N2

D). CO2

Answer: CO2

   

1145). The polymer used in the manufacture of electrical goods like switches, plug, etc., is

A). Chloroprene

B). Bakelite

C). Teflon

D). Nylon

Answer: Bakelite

1146). Chlorofluoro Carbon contributes about ..... percent of global warming.

A). 10.4

B). 6

C). 14

D). 20

Answer: 10.4

   

1147). Sulphates of calcium, barium and strontium exhibit

A). Chemiluminescence

B). Fluorescence

C). Phosphorescence

D). Bioluminescence

Answer: Fluorescence

   

1148). The products. in the electrolysis of aqueous potassium bromide are

A). Potassium metal and Oxygen

B). Potassium metal and Bromine

C). Hydrogen and Bromine .

D). Oxygen and Bromine

Answer: Potassium metal and Bromine

   

1149). Which statement is correct?

A). All minerals are ores

B). A mineral cannot be an ore

C). An ore cannot be a mineral

D). All ores are minerals

Answer: All ores are minerals

   

1150). Which metal is used for Galvanisation of iron

A). Chromium

B). Zinc

C). Nickel

D). Manganese

Answer: Zinc