Question : Which of the following correctly represents the number of atoms in one mole of CH3OH?
Option 1: 6.0*1023
Option 2: 3.6*1024
Option 3: 3.0 *1025
Option 4: 3
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Correct Answer: 3.6*1024
Solution : The correct option is 3.6*1024.
The total number of atoms in one mole of methanol is 3.6*1024. There are six atoms present in methanol(CH3OH). Carbon (C) - 1 Hydrogen (H) - 4 Oxygen (O) - 1. No. of atoms in 1 mole of CH3OH = 6.022*1023 * 6 = 3.6*1024 atoms (where 6.022*1023 is Avogadro's number.).
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Question : The chemical formula of acetic acid is
Option 1: CH3COH
Option 2: CH3COOH
Option 3: CH3COCH3
Option 4: CH2COOH
Question : The buffer action of blood is due to the presence of:
Option 1: HCl and NaCl
Option 2: Cl- and CO32-
Option 3: Cl- and HCO-3
Option 4: HCO3- and H2CO3
Question : The value of Avogadro number is
Option 1: 6.023 X 1022
Option 2: 6.023 X 1023
Option 3: 6.023 X 1024
Option 4: 6.023 X 1025
Question : Which of the following is the proper number of electrons in 1 A of current?
Option 1: 6.25 × 1021
Option 2: 6.25 × 1018
Option 3: 6.25 × 1019
Option 4: 6.25 × 1015
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Option 1: Na2So4 .10H2O
Option 2: NaHCO3
Option 3: Na2CO3.10H2O
Option 4: Ca(OH)2
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