GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 056

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 056

551). Which one of the following is a biomolecule?
A). formic acid
B). tartaric acid
C). glutamic acid
D). glutaric acid

Answer: glutamic acid


   
552). Consider the following statements:
l. Bakelite is obtained from phenol and formaldehyde
ll. Bakelite is a resin
Ill. Bakelite is a thermosetting plastic
IV. Bakelite does not undergo chemical change on heating.
Of the statements:
A). I alone is correct
B). I, II and III are correct
C). I, II, III and IV are correct
D). IV alone is correct

Answer: I, II, III and IV are correct


   
553). The foul smell of rancid butter is due to
A). Phthalic acid
B). Butyric acid
C). Oxalic acid
D). Amino acetic acid

Answer: Butyric acid


   
554). The organic compound used for silvering mirrors is
A). acetal
B). ethane
C). ethyl alcohol
D). acetaldehyde

Answer: acetaldehyde


   
555). What is the chemical name of marble?
A). Silicon dioxide
B). calcium carbonate
C). calcium chloride
D). calcium silicate

Answer: calcium carbonate



556). Which is not an isotope of hydrogen?
A). protium
B). tritrium
C). yttrium
D). deuterium

Answer: yttrium


   
557). Which substance is obtained by the hydrolysis of oil?
A). glycol .
B). glycerol
C). ethanol
D). acetic acid

Answer: glycerol


   
558). What are paraffins?
A). alkenes
B). alkanes
C). alkynes
D). fatty acids

Answer: alkanes


   
559). In lighting which gas is produced?
A). NO
B). N2O
C). N2O4
D). NO2

Answer: NO2



   
560). Rolled gold is an alloy of
A). Cu and Al
B). Cu and Au
C). Cu and Sn
D). Cu and Zn

Answer: Cu and Al