A. Aluminum
B. Chlorine
C. Calcium
D. Zinc
✅ The correct answer is option C.
Which among the following is an ionic solid?
A. Diamond
B. Dry ice
C. Table salt
D. All are ionic solids
✅ The correct answer is option C.
Which among the following statements about Ozone is INCORRECT?
A. It is found in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth‘s surface
B. It is lighter than oxygen that is why it is found in the upper atmosphere
C. It is an allotrope of oxygen
D. All are correct
✅ The correct answer is option B.
Which among the following is correct ?
A. Oxidation takes place at Cathode and Reduction Takes Place at Anode
B. Oxidation takes place at Anode and Reduction Takes place at Cathode
C. Both Oxidation and Reduction takes place at cathode
D. Both Oxidation and Reduction takes place at Anode
✅ The correct answer is option B.
The atomic weight of Chlorine is 35. It consists of _______?
A. 17 Protons + 18 Neutrons
B. 17 Neutrons + 18 protons
C. 17 Neutrons + 17 Protons + 1 electron
D. None of the above
✅ The correct answer is option A.
When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______?
A. 90%
B. 91.67%
C. 95.5%
D. 98%
✅ The correct answer is option B.
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?
A. Copper
B. Silver
C. Zinc
D. Gold
✅ The correct answer is option A.
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?
A. Stone bed method
B. biofilter method
C. aerobic filtration
D. anerobic filtration
✅ The correct answer is option B.
As per Avogadro‘s hypothesis , equal volumes of different gases at the same temperature and pressure contain equal number of ______?
A. Atoms
B. Molecules
C. Particles
D. Electrons
✅ The correct answer is option B.
Duralumin which is used in making aero planes is an alloy consisting of _____?
A. Aluminum & Copper
B. Aluminum, Copper & Manganese
C. Aluminum, Copper, Manganese & Magnesium
D. Aluminum and zinc
✅ The correct answer is option C.