CBSE Class 11 Chemistry Worksheet - Some Basic Concepts Of Chemistry (1) 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 -01
Full Marks: 20
1. All questions are compulsory.
2. Please give the explanation for the answer where applicable.
Q1 - What is the mass of 3 gram atoms of calcium? (1 Mark)
Q2 -Calculate the mass of CaCO3 which is required to react with 25 ml of 0.75 M HCl. (5 Marks)
Q3 - During preparation of ammonia by Haber’s process 30 L of H2 and 30 L of N2 are mixed. The yield of NH3was 50%. Find the composition of gaseous mixtures. (3 Marks)
Q4 -Potassium bromide (KBr) contains 32.9% potassium by mass. If 6.40 g of Br2 is made to react with 3.60 g of potassium, find the actual mass of potassium which reacts with bromine. (2 Marks)
Q5 - One atom of an element weighs 1.8 x 10 -22 g . What is the atomic mass of element? (1 Mark)
Q6 -Chlorophyll contains 2.7% of Magnesium by mass.The number of magnesium atoms present in 4.00g of chlorophyll is (3 Marks)
Q7 - How much water is required to dilute 10 ml of 10 N hydrochloric acid to make it exactly decinormal? (2 Marks)
Q8 - Find the molarity of solution prepared by dissolving 4g of NaOH in 3L of solution. (2 Marks)
Q9 - How many molecules are present in 1 kg mole? (1 Mark)
Please refer to the link below for CBSE Class 11 Chemistry Worksheet - Some Basic Concepts Of Chemistry (1)
Click for more Chemistry Study Material ›