Test Your Knowledge - CHEMISTRY MCQ PRACTICE
by Saksham Chaudhry : Lancers Convent, Prashant Vihar, New Delhi 110085
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A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. In which one of the given formulae of xenon compounds there are five a-bonds and three p-bonds in it?
A. XeF3O2 
B. XeF2O3 
C. XeFO 
D. XeF2O2 

2. A metal present in insulin is
A. iron 
B. copper 
C. zinc 
D. aluminium 

3. In chromite ore, the oxidation number of iron and chromium are respectively
A. +3, +2 
B. +2, +6 
C. +3, +6 
D. +2, +3 

4. In which one of the following, does the given amount of chlorine exert the least pressure in a vessel of capacity 1 dm3 at 273K?
A. 6.023 x 1021 molecules 
B. 0.071 g 
C. 0.02 mole 
D. 0.0355 g 

5. Among the alkali metals cesium is the most reactive because
A. the outermost electron is more loosely bound than the outermost electron of the other alkali metals 
B. it is the heaviest alkali metal 
C. its incomplete shell is nearest to the nucleus 
D. it has a single electron in the valence shell 

6. In the periodic table metals usually used as catalysts belong to
A. d - block 
B. f - block 
C. p - block 
D. s - block 

7. a-maltose consists of
A. two b-D-glucopyranose units with 1-4 glycosidic linkage 
B. two a-D-glucopyranose units with 1-2 glycosidic linkage 
C. one a-D-glucopyranose units and one b-D-glucopyranose unit with 1-2 glycosidic linkage 
D. two a-D-glucopyranose units with 1-4 glycosidic linkage 

8. The pH of 10-8 M HCI solution is
A. slightly more than 7 
B. between 6 and 7 
C. 8 
D. more than 8 

9. A solution containing 3g of the compound exerts the same osmotic pressure as that of 0.05 M glucose solution. The molecular formula of the compound is
A. CH2O 
B. C2H4O2 
C. C4H8O4 
D. C3H6O3 

10. This is due to
A. +R effect of -NH2 group 
B. hyperconjugation effect 
C. -R effect of -NH2 group 
D. -I effect of -NH2 group 

11. Which of the following compounds has the lowest melting point?
A. CaCl2 
B. CaBr2 
C. CaI2 
D. CaF2 

12. The volume of 10N and 4N HCl required to make 1 litre of 7N HCl are
A. 0.50 litre of 10N HCl and 0.50 litre of 4N HCl 
B. 0.80 litre of 10N HCl and 0.20 litre of 4N HCl 
C. 0.75 litre of 10N HCl and 0.25 litre of 4N HCl 
D. 0.60 litre of 10N HCl and 0.40 litre of 4N HCl 

13. Which of the following is not an ore of magnesium?
A. Dolomite 
B. Calamine  
C. Sea water 
D. Carnallite 

14. Of the following complex ions, which is diamagnetic in nature?
A. [Ni(CN)4]2 
B. [NiCl4]2 
C. [CuCl4]2 
D. [CoF6]3 

15. The general formula of a cycloalkane is
A. CnH2n + 2 
B. CnH2n 
C. CnH2n - 2 
D. CnHn 

16. Dalda is prepared from oils by
A. distillation 
B. hydrolysis 
C. reduction 
D. oxidation 

17. Which one of the following statements is not true regarding (+) Lactose?
A. On hydrolysis (+) Lactose gives equal amount of D(+) glucose and D(+) galactose 
B. (+) Lactose, C12H22O11 contains 8-OH groups 
C. (+) Lactose is reducing sugar and does not exhibit mutarotation 
D. (+) Lactose is a b-glycoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose 

18. The conversion of m-nitrophenol to resorcinol involves respectively
A. reduction, diazotization and hydrolysis 
B. hydrolysis, diazotization and reduction 
C. hydrolysis, reduction and diazotization 
D. diazotization, reduction and hydrolysis 

19. Which one of the following is employed as Antithistamine?
A. Norothindrone 
B. Diphenyl hydramine 
C. Chloramphenicol 
D. Omeprazole 

20. pH value of which one of the following is NOT equal to one?
A. 0.1 M HNO3 
B. 0.1 M CH3 COOH 
C. 50 cm3 0.4 M HCl + 50 cm3 0.2 M NaOH 
D. 0.05 M H2SO4 

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