Q. Duralumin which is used in making aero planes is an alloy consisting of _____?
✅ Correct Answer: (C)
Aluminum, Copper, Manganese & Magnesium
General Science MCQs and Notes
Q. As per Avogadro‘s hypothesis , equal volumes of different gases at the same temperature and pressure contain equal number of ______?
✅ Correct Answer: (B)
Molecules
Q. The process of purifying water by spraying water on to a bed of stones where microorganism live so that the microorganisms feed on the pathogens in water and make the water free from harmful pathogens is called?
✅ Correct Answer: (B)
biofilter method
Q. An Jewellery was left exposed to the atmosphere for some time and it becomes coated with green carbonate. The Jewellery is made up of which of the following?
✅ Correct Answer: (A)
Copper
Q. When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______?
✅ Correct Answer: (B)
91.67%
Q. The atomic weight of Chlorine is 35. It consists of _______?
✅ Correct Answer: (A)
17 Protons + 18 Neutrons
Q. Which among the following is correct ?
✅ Correct Answer: (B)
Oxidation takes place at Anode and Reduction Takes place at Cathode
Q. Which among the following statements about Ozone is INCORRECT?
✅ Correct Answer: (B)
It is lighter than oxygen that is why it is found in the upper atmosphere
Q. Which among the following is an ionic solid?
✅ Correct Answer: (C)
Table salt
Q. Hard Water contains which of the following?
✅ Correct Answer: (C)
Calcium