Question

Assignment Class:11 Subject:Chemistry Unit 1 Part - A Choose the best answer: 1) Anything that has mass and occupies space is called a) Matter b) Weight c Energy d) System 2) The mass of one mole of a substance is a) Atomic mass b) Molecular mass C Molar mass d) Nuclear mass 3) Which one of the following is used as standard for atomic mass? a) 6C12 b) 7C12 d) 6C14 4) One U stands for the mass of a) an atom of C-12 b) 1/12th of C-12 atom c) 1/12th of H-atom done atom of any element 5) Which of the compound (s) has/ have percentage of carbon san same as that in ethylene? c 6C13 c) benzene d) ethane a) Propene b) ethyne 6) Unit of Avogadro's number is a) mol b) mol-1 cg d) no unit 7) The volume occupied by one mole of any gas at SATP is a) 22.4 litres b) 224 litres c 2.24litres d) 0.224 litres 8). The oxidation state of an element in its combined state is a) Zero b) +1 c-1 d) +2 9) The oxidation state of oxygen in 02 is a) O b) +1 c) +2 d) -2 1/2 AD Meesho Online Shopping 0 meesho DOWNLOAD 4.4 FREE​

Answer 1

Answer:

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