CBSE Class 11 Chemistry Worksheet - Some Basic Concepts Of Chemistry (3) CBSE,CCE and NCERT students can refer to the attached file. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. The study material available on our website for all CBSE classes and subjects have been prepared by teachers from all over the country. All study material has been carefully designed keeping into mind the latest CBSE examination trends.
Ch#1 : Some Basic Concepts of Chemistry -03
Full Marks: 20
1. All questions are compulsory.
2. Please give the explanation for the answer where applicable.
Q1 -Express the following in SI units-
(i) Speed of ball 90 miles per hour
(ii) Carbon - carbon bond length 1.33 Å (2 Marks)
Q2 - Solve the following and state the answer in proper number of significant digits. 108/8.2 (2 Marks)
Q3 - On complete combustion 0.858 g of compound (x) gives 2.63 g of CO2 and 1.27g of H2O. Calculate the empirical formula of the compound. (5 Marks)
Q 4 -Density of mercury is 13.6 g/cc. Its density in Kg m–3 is (1 Mark)
Q5 - Solve the following and express the answer in standard exponential form (2.0 x 10 13) + (1.5 x 10 14). (1 Mark)
Q6 - (i) How many moles of sulphur will be produced when 2 moles of H2S reacts with 11.2L of SO2 at NTP.
(ii) Name the limiting reagent in the above reaction. (2 Marks)
Q7 - Define limiting reagent. (1 Mark)
Q8 -A car consumes 30 moles per gallon of gasoline and drives 12000 miles per year. Calculate the amount of oxygen required to run the car for one year. [Assume that octane (C8H18) is the main component of the gasoline.] (3 Marks)
Q9 -The mass of an empty beaker is 50.55g. The mass of a same beaker when filled completely with a liquid is 150.457g. If the volume of the empty glass is 100.2ml, calculate the density of the liquid. Express the answer in appropriate significant figures. (3 Marks)
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