11th Chemistry - Unit 1 Study Materials

 

11-TH CHEMISTRY
 CHEMISTRY VAATHI Page 1
1.BASIC CONCEPTS OF CHEMISTRY AND CHEMICAL CALCULATION.
MOST IMPORTANT QUESTIONS:
1.Define equivalent mass ? Q-19 B/B-28 ****
2. Define relative atomic mass ? B/B-26 ****
3. Distinguish between oxidation and reduction ? B/B-30 (H-19) ****
4. Calculate the molar mass of the following compounds. B/B-31 ****
i) urea [CO(NH2)2] ii) acetone [CH3COCH3]
iii)Boric acid [H3BO3] iv) nitric acid [HNO3] 4. What do you understand by the term mole ? (B/B- 27)(jun-2019) **** 5. How many moles of ethane is required to produce 44g of CO2(g) after.combustion ?(B/B- 40) **** 6. what is limiting reagents ? (Q-18) IN.P.NO : 17 **** 7. Find out the equivalent weight of sulphuric acid .IN.P.NO : 9 **** 8. Define – Oxidation number ? IN.P.NO :20 (H-18) 9. What is combination reaction ? Give an example . IN.P.NO :22 (H-19) **** 10. Define Avogadro number .(IN.P.NO : 7) 11.How many moles of hydrogen is required to produce 10 mole of ammonia ?
12. Explain the following redox –reactions.(IN.P.NO :22,23 )
i)Combination reactions ii)Decomposition reaction iii) Displacement reaction
13. What are auto redox reactions ? give an example. (jun-2019) (IN.P.NO : 23)
14. What is empirical formula of the following ? (IN.P.NO : 12)
a) acetic acid (C2H4O2) b) Tartaric acid (C4H6O6)
15. Calculate the molar mass of the following compounds CRT i)H2SO4 ii) CH3COOH
16. Define –i) amu ii)Relative molecular mass. iii)Molar mass. iv)Molar volume.
17. Mass of one atom of an element is 6.645 x 1023g. How many moles of element are there in 0.320 kg.
18.A compound contains 69.5% oxygen and 30.5% nitrogen and its vapour density is 46.calculate its empirical formula and molecular formula.
19.Calculate amount of moles of hydrogen required to prepare 10 mole ammonia ?
20.A compound on analysis gave the following percentage composition C=54.55%, H=9.09% ,O=36.36% .Determine the empirical formula of compound.
21.An organic compound present in vinegar has 40% carbon , 66 % of hydrogen 53.4 % of oxygen. Find the empirical formula of compound. IN.P.NO :11 ****
22.Calculate the empirical and molecular formula of a compound containing 76.6% carbon,6.38 % hydrogen and rest oxygen its vapour density is 47. B/B- 42 *
23.how many moles of ethane is required to produce 44g of CO2g after combustion
24. Balance the equation by oxidation number method (B/B- 44 )
25. Balance the following equation by ion electron method (B/B -45)

 

M.POOVARASAN M,Sc B,Ed PG ASST IN CHEMISTRY