Q1. Which of the following metals will not react with oxygen, even when heated very strongly in air?
(a) Zinc(Zn)
(b) Aluminium(Al)
(c) Silver(Ag)
(d) Iron(Fe)
Q2. Which of the following element occurs in free in nature?
(a) Cobalt(Co)
(b) Iron(Fe)
(c) Nickle(Ni)
(d) Platinum(Pt)
Q3. Which of the following pairs will give displacement reaction?
(a) NaCl solution and copper metal
(b) MgCl2 solution and aluminium metal
(c) FeSO4 solution and silver metal
(d) AgNO3 solution and copper metal
Q4. Which of the following is an anti-diabetic drug?
(a) Insulin
(b) Penicillin
(c) Chloroquine
(d) Aspirin
Q5. Metal A when dipped in solution of salt of metal B ,then metal B is displaced . this shows that—
(a) Metal A is more reactive than metal B
(b) Metal B is more reactive than metal A
(c) Metal A and metal B are equally reactive
(d) None of these
Q6. Phenomena in which compounds have same molecular formula but different structures is called-
(a) multimers
(b) catenation
(c) isomerism
(d) allomerism
Q7. Methyl has molecular formula
(a) CH4
(b) CH2
(c) CH
(d) CH3
Q8. If OH group is attached to benzene ring, compound form is
(a) alcohol
(b) alkyne
(c) alkene
(d) phenol
Q9. Self-linking ability of carbon is called
(a) carbonation
(b) sublimation
(c) hydrogenation
(d) catenation
Q10. Naphthalene balls are obtained from which of the following?
(a) Carbon
(b) Coke
(c) Coal tar
(d) Coal gas
Q11. Dead organisms are transformed into petroleum & natural gas in—
(a) Absence of air
(b) Presence of air
(c) Presence of sun light
(d) None of these
Q12. Which of the following is needed by surgeons during surgery?
(a) Ethane
(b) Propanol
(c) Ether
(d) Acid
Q13. Which gas emits from the rice field?
(a) ethane
(b) nitrogen
(c)methane
(d) All of the above
Q14. Which of the following is the end product of alcoholic fermentation?
(a) pyruvic acid
(b) ethyl alcohol
(c) acetaldehyde
(d) formic acid
Q15. Blood cells do not shrink in blood because blood is—
(a) hypertonic
(b) isotonic
(c) equimolar
(d) hypotonic
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