Home > Stock Markets > Quizzes > Basic Concepts of Chemistry
Basic Concepts of Chemistry
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 100% • Most missed: “Concentrated aqueous sulphuric acid is %98H2 SO4 by mass and has a density of 1.…”
Basic Concepts of Chemistry
Time left 00:00
25 Questions

1. The percentage weight of Zn in white vitriol[ZnSO47H2O] is approximately equal to (Zn =65 - S=32 - O=16 and H= )1 [1995]
2. The mass of carbon anode consumed(giving only carbondioxide) in the production of270 kg of aluminium metal from bauxite by theHall process is (Atomic mass: Al = )27 [2005]
3. Volume occupied by one molecule of water(density = 1 g cm-“)3 is: [2008]
4. Percentage of Se in peroxidase anhydraseenzyme is %0.5 by weight (atwt= )78.4 thenminimum molecular weight of peroxidaseanhydrase enzyme is [2001]
5. The molecular weight of O2 and SO2 are 32and 64 respectivelyAt 15°Cand 150 mm Hgpressure - one litre of O2 contains -˜N-™ molecules.The number of molecules in two litres of SO 2under the same conditions of temperature andpressure will be: [1990]
6. In Haber process 30 litres of dihydrogenand 30 litres of dinitrogen were taken forreaction which yielded only %50 of the expectedproductWhat will be the composition ofgaseous mixture under the aforesaid conditionin the end? [2004]
7. 10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be: [2009]
8. An organic compound containing C - HandOgave on analysis C-“ %40 and H -“ .%6.66Itsempirical formula would be [1999 - 94]
9. 6.02 × 1020 molecules of urea are present in 100 mLof its solutionThe concentration ofsolution is: [2013]
10. At S.T.P the density of CCl 4 vapours in g/Lwillbe nearest to: [1988]
11. Which has the maximum number ofmolecules among the following? [2011]
12. One litre hard water contains 12.00 mg Mg 2+.Mili-equivalents of washing soda required toremove its hardness is: [1988]
13. Specific volume of cylindrical virus particleis 6.02 × 10-“2 cc/gmwhose radius and length 7Ã…& 10 A respectivelyIf NA= 6.02 × 1023 - findmolecular weight of virus [2001]
14. The number of oxygen atoms in 4.4 g of CO 2 is[1990]
15. Which has maximum number of molecules?[2003]
16. Ametal oxide has the formula Z 2O3It can bereduced by hydrogen to give free metal andwater0.1596 g of the metal oxide requires 6 mgof hydrogen for complete reductionThe atomicweight of the metal is [1989]
17. How many moles of lead (II) chloride will beformed from a reaction between 6.5 g of PbOand3.2 g of HCl? [2008]
18. Ratio of Cp and CV of a gas -˜X-™ is 1.4Thenumber of atoms of the gas -˜X-™ present in 11.2litres of it at NTPwill be [1989]
19. The number of significant figures for thethree numbers 161 cm - 0.161 cm - 0.0161 cm are[1998]
20. An element - Xhas the following isotopiccomposition: 200X: 199 %90X: 202 %8.0X: %2.0 Theweighted average atomic mass of the naturallyoccuring element Xis closest to [2007]
21. If N A is Avogadro-™s number then number ofvalence electrons in 4.2g of nitride ions (N 3-“ ) is[1994]
22. What volume of oxygen gas (O2) measuredat °0 C and 1 atm - is needed to burn completely1L of propane gas (C 3H8) measured under thesame conditions? [2008]
23. litres nitrogen - 1520 litres nitrogen - 2025 litres nitrogen - 1510 litres nitrogen - 3027The maximum number of molecules ispresent in [2004]
24. The number of atoms in 0.1 mol of atriatomic gas is: (N A= 6.02 ×1023 mol-“ )1 [2010]
25. The number of moles of KMnO4 that will beneeded to react with one mole of sulphite ion inacidic solution is [2007]

⚡ Recently practiced quizzes in this topic
Live quiz activity
Financial Markets and Institutions Practice Test Questions Security Analysis and Portfolio Management Practice Test Portfolio Management Terms Day Trading FINRA Series 7 Practice Test Series 79 Exam Stock Market Test Stock Market Basics
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.