A. FeS2
B. HgS
C. PbS
D. ZnS
Related Mcqs:
- The most paramagnetic element is____________________?
A. Iron
B. Cobalt
C. Chromium
D. Manganese - The common name of propane -1 3-dioic acid is____________________?
A. Oxalic acid
B. Succinic acid
C. Malonic acid
D. Fumaric acid - Isotopes differs in______________________?
A. arrangement of electrons in orbitals
B. position in the periodic table
C. properties depend upon mass
D. chemical properties - The molecules of CO2 in dry ice form__________________?
A. Ionic crystal
B. Covalent crystal
C. Molecular crystal
D. Any type of crystal - Which of the following can be used in laptops ?
A. Silver oxide battery
B. Fuel cell
C. Nickel cadmium cell
D. Lead accumulator - Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
A. n. butane
B. Ethanol
C. Ethane
D. Diethy1 ether - The number of atoms in a molecule determines________________?
A. macromolecule
B. macromolecule
C. molecularity
D. atomicity - Bohrs model is contradicted by__________________?
A. Plancks theory
B. Dual nature of matter
C. Heisenbergs uncertainty principle
D. All of these - Nitrates of which pair gives different products on thermal decomposition___________________?
A. Na K
B. Mg Ca
C. Li Na
D. Li Ca - Vinyl acetylene combines with hydrochloric acid produces___________________?
A. Diviny1 acetylene
B. Ethylidine dichloride
C. Chloroprene
D. 1 – 3 – 3 – trichloro butane
