Which of the following are found in nucleus of Deuterium
A. 1 proton & 1 neutron
B. 2 protons
C. 1 proton and 1 electron
D. 2 neutrons only
✅ The correct answer is option A.
Cassiterite is an ore of which of the following ?
A. Iron
B. Zinc
C. Copper
D. Tin
✅ The correct answer is option D.
Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% by weight. An increasing amount of Iron will result in which of the following?
A. Increase Hardening
B. Decrease Hardening
C. Increase ductility
D. Increase melting Point
✅ The correct answer is option A.
A Cyclotron is ___?
A. A charged particle
B. A particle Accelerator
C. A magnetic particle
D. A radioactive particle
✅ The correct answer is option B.
Which among the following is the most important characteristic of Noble metals?
A. Luster
B. Non reactive nature
C. Preciousness
D. Rare availability
✅ The correct answer is option B.
Charles Goodyear is known for which of the following?
A. Experiments on Rubber Plants
B. Vulcanization of Rubber
C. Invention of Radial Tyres
D. Invention of Artificial Rubber
✅ The correct answer is option B.
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.
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.
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.
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.