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General Knowledge > General Knowledge > Basic Science

1 Which of the following is necessary for the formation of hemoglobin ?
 
1Iron
2Salt
3Phosphorous
4Sulphur
 
Answer: Option1
2 The two elements that are frequently used for making transistors are
 
1boron and aluminium
2silicon and germanium
3iridium and tungsten
4niobium and columbium
 
Answer: Option2
3 Bleaching powder is made from —
 
1 Sulphur dioxide and gypsum
2Chlorine and Charcoal
3 Soda ash and lime
4 Lime and Chlorine
 
Answer: Option4
4 In which of the following activities silicon carbide is used?
 
1Making cement and glass
2Disinfecting water of ponds
3cutting very hard substances
4Making casts for statues
 
Answer: Option3
5 An alloy used in making heating elements for electric heating devices is —
 
1Solder
2 Alloysteel
3Nichrome
4German Silver
 
Answer: Option3
6 Which of the following does not contain a coinage metal?
 
1Silver and Gold
2Zinc and Gold
3Copper and Silver
4Copper and Gold
 
Answer: Option2
7 Which of the following is a non-metal that remains liquid in room temperature ?
 
1Bromine
2 Chlorine
3Helium
4Phosphorus
 
Answer: Option1
8 The fastest acting enzyme in the biological kingdom is–
 
1lipase
2amylase
3carboxypeptidase
4carbonic anhydrase
 
Answer: Option4
9 Palaeobotany is the branch of botany is which we study about–
 
1Animal fosills
2 Plant fossils
3Seed of plant
4Flower
 
Answer: Option2
10 Which of the following are the ingredients of gun metal?
 
1Iron, Zinc, Titanium
2Iron, tin
3Iron, Brass, Tin
4Copper, Tin
 
Answer: Option4
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