The nucleus of the isotopes tritium,contains
- A. two neutrons with no protons
- B. one neutron and one proton
- C. two neutrons and one proton
- D. two neutrons, one proton and one electron
Which of the following is a measure of the average kinetic energy of the molecules of a substance?
- A. volume
- B. mass
- C. pressure
- D. temperature
A given mass of gas occupies 2 dm2 at 300k. At what temperature will its volume be doubled keeping the pressure constant?
- A. 400k
- B. 480k
- C. 550k
- D. 600k
Which of the following compounds is a secondary alkanol?
- A. A
- B. B
- C. C
- D. D
In the experiment above. Z can be
- A. a solution of sodium dioxonitrate (lll) and ammonium chloride
- B. a solution of lead trioxnitrate (V)
- C. a solution of sodium trioxonitrate (V) and ammonium chloride
- D. concentrated tetraoxosulphate (VI) acid and sodium trioxonitrate (V)
An example of a polysaccharides is?
- A. βdextrose
- B. mannose
- C. glucose
- D. starch
Alkanals can be differentiated from alkanones by reaction with?
- A. 2,4-dinitrophenylhydrazine
- B. hydrogen cyanide
- C. sodium hydrogen sulphite
- D. Tollen's reagent
The characteristics reaction of carbonyl compounds is?
- A. substitution
- B. elimination
- C. addition
- D. saponfication
An organic compound containing 40.1% carbon and 6.6% hydrogen has an empirical formula of?
- A. C2H4O2
- B. C2H3O2
- C. CH2O
- D. CH3O
The functional group present in an organic compound which gives bubbles on treatment with a saturated solution of NaHCO3 is?
- A. hydroxyl group
- B. carboalkoxyl group
- C. carbonyl group
- D. carboxyl group
Which of the following are isomers?
- A. Ethanol and dimethyl ether
- B. Benzene and methybenzene
- C. Ethanol and propanone
- D. Trichloromethane and tetrachloromethane
Which of the following compounds reacts with sodium metal as well as silver and copper salts ?
- A. CH3C Ξ CβCH3
- B. CH3CH2CH23>
- C. CH3C Ξ CH
- D. CH3CH = CH CH3
The carbon atoms in ethene are?
- A. sp3 hybridized
- B. sp hybridized
- C. sp2 hybridized
- D. not hybridized
CaOs + H2O(l) β Ca(OH)2(s) ΞH -65 kj. The process represented by the above equation is known as?
- A. dissolution
- B. slaking
- C. liming
- D. mortaring
Duralumin consists of aluminium, copper, ?
- A. zinc and gold
- B. lead and maganese
- C. nickle and silver
- D. manganese and magnesium
Which of the following is NOT used as a raw material in the Solvay process?
- A. Ammonia
- B. Sodium chloride
- C. Calcium trioxocarbonate (IV)
- D. Sodium trioxocarbonate (IV)
Sodium hydroxide solution can be conveniently stored in a container made of?
- A. lead
- B. zinc
- C. aluminium
- D. copper
Addition of an aqueous solution of a salt gives a white precipitate. The salt is likely to be a?
- A. nitrate
- B. carbonate
- C. chloride
- D. sulphide
Safety matches contain sulphur and the following except?
- A. sodium chloride
- B. potassium trioxonitrate (V)
- C. charcoal
- D. phosphorus sulphide
The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?
- A. hydrogen
- B. nitrogen (IV) oxide
- C. oxygen
- D. ammonium
The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?
- A. hydrogen
- B. nitrogen (IV) oxide
- C. oxygen
- D. ammonium