631. British Scientist JJ Thomson was awarded Nobel prize in Physics in 1906 for discovery of which of the following particle?
A. Electron
B. Proton
C. Neutron
D. Radio activity
✅ The correct answer is option A.
SSC
632. Which among the following explains the radiation emitted by black bodies?
A. Big-bang theory
B. Quantum Theory
C. Piezoelectric Effect
D. None of the above
✅ The correct answer is option B.
633. 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.
634. Who among the following is known to manufacture first Cyclotron?
A. Ernest Lawrence
B. Niels Bohr
C. Rutherford
D. Max Born
✅ The correct answer is option A.
635. The primary part of Liquefied Petroleum Gas LPG is ______?
A. Butance
B. Methane
C. Propane
D. Ethane
✅ The correct answer is option C.
636. 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.
637. The volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules regardless of the nature of the gas. This concept is called as___?
A. Avogadro‘s law
B. Dalton‘s law
C. Henry‘s law
D. Ideal gas law
✅ The correct answer is option A.
638. Which among the following is Quick Silver?
A. Aluminium
B. Mercury
C. Lead
D. Zinc
✅ The correct answer is option B.
639. 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.
640. F block elements in the periodic table which are commonly called Lanthanides have the following atomic numbers:
A. 57-70
B. 58-71
C. 59-72
D. 58-70
✅ The correct answer is option B.