Q1. For instant energy, athletes take
(a) Sucrose
(b) Vitamin C
(c) Sodium chloride
(d) Milk
Q2. For protection against gamma radiations, the shields used should be made of
(a) Iron
(b) Lead
(c) Copper
(d) Tin
Q3. Froth flotation is generally used for the concentration of
(a) Oxide ores
(b) Sulphate ores
(c) Sulphide ores
(d) Carbonate ores
Q4. Soaps are obtained from oils and fats by
(a) Acid hydrolysis
(b) Saponification
(c) Steam hydrolysis
(d) Fat splitting
Q5. Iodine is administered to patients suffering from
(a) Goitre
(b) Night blindness
(c) Rickets
(d) Rheumatism
Q6. Zinc helps in the synthesis of biological protein; this is the basis for using zinc ointment for
(a) Hair growth
(b) Healing wounds
(c) Increasing body weight
(d) Nail growth
Q7. Linseed oil is
(a) A drying oil
(b) An edible oil
(c) An animal oil
(d) A saturated oil
Q8. Magnesium burns in air forming
(a) MgO
(b) Mg_3 N_2
(c) MgO+Mg_3 N_2
(d) MgCO_3
Q9. Properties of elements are determined by
(a) Atomic number
(b) Atomic weight
(c) Neutrons
(d) Protons
Q10. The raw materials used in the manufacture of glass are
(a) Sand, soda and limestone
(b) Sand, charcoal and soda
(c) Limestone, charcoal and sulphur
(d) Sand, sulphur and soda
Q11. Acetyl salicylic acid is an intermediate compound in the manufacture of
(a) Penicillin
(b) Streptomycin
(c) Aspirin
(d) Sulfapyridine
Q12. Cinnabar is an ore of —
(a) copper
(b) iron
(c) mercury
(d) lead
Q13. At room temperature, which element conducts electricity better than any other element?
(a) Pb
(b) Au
(c) Ag
(d) Cu
Q14. The candela is one of the seven base units in the SI system. It measures…?
(a) Magnetism
(b) Luminous intensity
(c) Combustion rate
(d) Luminance
Q15.Yeast is an important source of
(a) Vitamin B
(b) vitamin C
(c) vitamin A
(d) vitamin D
