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NEETChemistrySome Basic Concepts of Chemistry

Match List-I with List-II List-I List-II A 16 g of CH 4 ( g ) I Weighs 28 g B 1 g of H 2 ( g ) II 60 . 2 × 10 23 electrons C 1 mole of N 2 ( g ) III Weighs 32 g D 0 . 5 mol of SO 2 ( g ) IV Occupies 11 . 4 L volume at STP Choose the correct answer from the options given below:

Options

  1. AA-II, B-III, C-IV, D-I
  2. BA-II, B-IV, C-I, D-III
  3. CA-I, B-III, C-II, D-IV
  4. DA-II, B-IV, C-III, D-I

Correct answer

B. A-II, B-IV, C-I, D-III

Step-by-step solution

The number of moles = Mass Molar mass The number of molecules = moles × N A One mole of any gas occupies 22 . 7 L at STP. (A) Moles of CH 4 = 16 16 = 1 Molecules = 6 . 02 × 10 23 Electrons = 10 × 6 . 02 × 10 23 = 60 . 2 × 10 23 (B) Moles of H 2 = 1 2 = 0 . 5 mole Volume at STP = 1 2 × 22 . 7 = 11 . 35 lit . (C) 1 mole N 2 = 28 gm (D) 0 . 5 mole SO 2 = 1 2 × 64 = 32 gm

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