1. What is the melting point of chromium?
a) 2118 K
b) 2218 K
c) 2318 K
d) 2418 K
Explanation: It is a chemical element with atomic number 24. It is a steely-gray, lustrous, hard and brittle metal and has a high melting point.
2. What is the melting point of cobalt?
a) 1449 K
b) 1559 K
c) 1669 K
d) 1769 K
Explanation: It is found only in chemically combined form. It occurs as two crystallographic structures i.e. hcp and fcc.
3. Which one is having the highest melting point?
a) Bismuth
b) Beryllium
c) Cadmium
d) Copper pure
Explanation: Melting point of beryllium is 1550 k while that of bismuth, cadmium and pure copper are 545 K, 594 K and 1358 K respectively.
4. What is the melting point of germanium?
a) 1211 K
b) 1311 K
c) 1411 K
d) 1511 K
Explanation: It is a lustrous, hard, grayish-white metalloid in the carbon group. It is a semiconductor which reacts and form complexes with oxygen in nature.
5. Which one is having a minimum melting point?
a) Tin
b) Iron pure
c) Germanium
d) Gold
Explanation: Melting point of germanium is 1211 K while that of tin, pure iron and gold are 1505 K, 1810 K and 1336 K respectively.
6. What is the melting point of nichrome?
a) 1572 K
b) 1672 K
c) 1772 K
d) 1872 K
Explanation: Nichrome generally refers to an alloy of nickel, chromium and iron. Nichrome alloys are used in resistance wire.
7. What is the melting point of palladium?
a) 1527 K
b) 1627 K
c) 1727 K
d) 1827 K
Explanation: It is a rare and lustrous silvery-white metal. Palladium has the lowest melting point and is the least dense.
8. Which one is having a maximum melting point?
a) Palladium
b) Magnesium
c) Platinum pure
d) Lead
Explanation: Melting point of pure platinum is 2045 K while that of palladium, magnesium and lead are 1827 K, 923 K and 601 K respectively.
9. What is the melting point of tin?
a) 505 K
b) 605 K
c) 705 K
d) 805 K
Explanation: It is the main group metal in group 14 of the periodic table. It has 10 stable isotopes, the largest number in the periodic table.
10. Which one is having a minimum melting point?
a) Titanium
b) Zinc
c) Uranium
d) Rhodium
Explanation: Melting point of zinc is 693 K while that of titanium, uranium and rhodium are 3269 K, 1406 K and 2236 K respectively.