medical entrance tips chemistry

1. The oxidation number of iron in pyrites FeS2 is
a. 1 b. 2
c. 3 d. 4
e. -4
2. Pyrolusite is converted to K2MnO by fusing it with
a. KOH b. KNO3
c. KOH and KNO3 d. K2CO3
e. KOH and MnO2
3. A metal purified by zone-refining is
a. Si b. Ga
c. Ti d. Mg
e. Ni
4. A metal used as scavenger during steel manufacturing process
a. Mn b. Cu
c. Ti d. Ni
e. None of these
5. Speigel is an alloy of
a. Fe, Mn, Cr b. Fe, Mn, C
c. Cu, Ni, Zn d. Fe, Sn, C
e. Fe, Cu, Ni
6. In the conversion of pig iron to wrought iron the furnace lining is made of
a. Lime stone b. Carbon
c. Haematite d. Silica
c. Carborundum
7. Among the first row transition elements the highest oxidation state is exhibited by
a. V b. Cr
c. Mn d. Fe
e. Co
8. A blue oxide of chromium formed when acidified K2Cr2O7 reacts with H2O2 in ether is
a. CrO3 b. Cr2O3
c. CrO5 d. K2CrO4
e. None of these
9. An alloy used for making electromagnets and ocean cables is
a. Invar b. Chrome steel
c. Stainless steel d. Permalloy
e. German silver
10. A chemical used for stopping bleeding from cuts and bruises
a. FeCl3 b. AgNO3
c. CuSO4 d. KNO3
e. Al2O3
11. Ruby copper is an important mineral containing copper. It is mostly1. The oxidation number of iron in pyrites FeS2 is
a. 1 b. 2
c. 3 d. 4
e. -4
2. Pyrolusite is converted to K2MnO by fusing it with
a. KOH b. KNO3
c. KOH and KNO3 d. K2CO3
e. KOH and MnO2
3. A metal purified by zone-refining is
a. Si b. Ga
c. Ti d. Mg
e. Ni
4. A metal used as scavenger during steel manufacturing process
a. Mn b. Cu
c. Ti d. Ni
e. None of these
5. Speigel is an alloy of
a. Fe, Mn, Cr b. Fe, Mn, C
c. Cu, Ni, Zn d. Fe, Sn, C
e. Fe, Cu, Ni
6. In the conversion of pig iron to wrought iron the furnace lining is made of
a. Lime stone b. Carbon
c. Haematite d. Silica
c. Carborundum
7. Among the first row transition elements the highest oxidation state is exhibited by
a. V b. Cr
c. Mn d. Fe
e. Co
8. A blue oxide of chromium formed when acidified K2Cr2O7 reacts with H2O2 in ether is
a. CrO3 b. Cr2O3
c. CrO5 d. K2CrO4
e. None of these
9. An alloy used for making electromagnets and ocean cables is
a. Invar b. Chrome steel
c. Stainless steel d. Permalloy
e. German silver
10. A chemical used for stopping bleeding from cuts and bruises
a. FeCl3 b. AgNO3
c. CuSO4 d. KNO3
e. Al2O3
11. Ruby copper is an important mineral containing copper. It is mostly1. The oxidation number of iron in pyrites FeS2 is
a. 1 b. 2
c. 3 d. 4
e. -4
2. Pyrolusite is converted to K2MnO by fusing it with
a. KOH b. KNO3
c. KOH and KNO3 d. K2CO3
e. KOH and MnO2
3. A metal purified by zone-refining is
a. Si b. Ga
c. Ti d. Mg
e. Ni
4. A metal used as scavenger during steel manufacturing process
a. Mn b. Cu
c. Ti d. Ni
e. None of these
5. Speigel is an alloy of
a. Fe, Mn, Cr b. Fe, Mn, C
c. Cu, Ni, Zn d. Fe, Sn, C
e. Fe, Cu, Ni
6. In the conversion of pig iron to wrought iron the furnace lining is made of
a. Lime stone b. Carbon
c. Haematite d. Silica
c. Carborundum
7. Among the first row transition elements the highest oxidation state is exhibited by
a. V b. Cr
c. Mn d. Fe
e. Co
8. A blue oxide of chromium formed when acidified K2Cr2O7 reacts with H2O2 in ether is
a. CrO3 b. Cr2O3
c. CrO5 d. K2CrO4
e. None of these
9. An alloy used for making electromagnets and ocean cables is
a. Invar b. Chrome steel
c. Stainless steel d. Permalloy
e. German silver
10. A chemical used for stopping bleeding from cuts and bruises
a. FeCl3 b. AgNO3
c. CuSO4 d. KNO3
e. Al2O3
11. Ruby copper is an important mineral containing copper. It is mostly