A. A charged particle
B. A particle Accelerator
C. A magnetic particle
D. A radioactive particle
✅ The correct answer is option B.
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.
Cassiterite is an ore of which of the following ?
A. Iron
B. Zinc
C. Copper
D. Tin
✅ The correct answer is option D.
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.
Which among the following provides the centripetal force to an electron circulating around the nucleus?
A. electrostatic forces of repulsion
B. electrostatic force of attraction
C. speed of the electron
D. nuclear charge
✅ The correct answer is option B.
Which among the following of a catalyst does not change at the end of a reaction?
A. Quantity
B. Chemical Composition
C. Both Quantity and Chemical com position
D. None of the above
✅ The correct answer is option C.
Hard Water contains which of the following?
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.