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Paper 1 | Objectives | 49 Questions
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Paper 1 | Objectives
Which of the following can be obtained by fractional distillation?
A. Nitrogen from liquid air
B. Sodium chloride from sea water
C. Iodine from a solution of Iondine in carbon tetrachloride
D. Sulphur from a solution of sulphur incarbon disulphide
Which of the following are mixtures? i, Petroleum ii, Rubber latex iii. Vulcanizer's solution iv, Carbon (II)sulphide
A. i, ii and iii
B. i, ii and iv
C. i and ii only
D. i and iv
An iron ore is known to contain 70.0% Fe2O3. The obtain from 80kg of the ore is? (Fe = 56, O = 16)
A. 35.0 kg
B. 39.2 kg
C. 70.0 kg
D. 78.4 kg
In two separate experiments, 0.36g and 0.71g of chlorine combined with a metal X to give Y and Z respectively. An analysis showed that Y and Z contain 0.20g and 0.40g of X respectively. The data above represents the law of ?
A. multiple proportion
B. conservation of mass
C. constant composition
D. reciprocal proportion
30cm\(^3\) of oxygen at 10 atmospheres pressure is placed in a 20 cm\(^3\) container. Calculate the new pressure if temperature is kept constant?
A. 6.7 atm
B. 15.0 atm
C. 60.0 atm
D. 0 atm
Calculate the volume of carbon (IV)oxide measured at s.t.p, produced when 1 kg of potassium hydrogen trioxocarbonate (IV) is totally decomposed by heat? (G.M.V. at s.t.p 22.4 dm3, K = 39, O = 16, C = 12, H = 1)
A. 28 dm3
B. 56 dm3
C. 112 dm3
D. 196 dm3
A given quantity of a gas occupies a volume of 228 cm3 at a pressure of 750mm Hg. What will be its volume at atmospheric pressure?
A. 220 cm3
B. 225 cm3
C. 230 cm3
D. 235 cm3
A sample of a gas exerts a pressure of 8.2 atm when confined in a 2.93 dm3 container at 20°C. The number of moles of gas in the sample is? (R = 0.082 litre atm / deg mole)
Atoms of element X (with 2 electrons in the outer shell). combine with atoms of Y (with 7 electrons in the outer shell). Which of the following statements is FALSE? The compound formed?
A. has formula XY
B. is likely to be ionic
C. contains X2+ ions
D. contains Y- ions
The electronic configuration of an elements is 1s22s22p63s23p3. How many unpaired electrons are there in the element?
Preview displays only 10 out of the 49 Questions