Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2004ChemistrySome Basic Concepts of ChemistryActual

The significant figures in 1.0024,1.240 and 0.0020 are respectively

Options

  1. A5,4,2
  2. B3,3,1
  3. C5,3,4
  4. D5,3,2

Correct answer

A. 5,4,2

Step-by-step solution

In 1.0024 , all figures are significant. In 1.240 ,the significant figures are four (zero tells about precision). Zero before a number are not significant, hence 0.0020 has only two significant numbers (2 and 0 after 2).

Practice Some Basic Concepts of Chemistry on Quantrex Academy →

More from Some Basic Concepts of Chemistry

Calculate the mass of potassium chlorate required to liberate 6.72 dm ^3 of oxygen at STP. [Molar mass of potassium chlorate = 122.5 g mol ⁻¹ ] 2026Find the mass of lime obtained by heating 500 g of 90 % pure lime stone. [Molar masses Ca =40 g/mol, O =16 g/mol & C =12 g/mol] 2026A coordination complex contains 2.6 % of Mg. Find the number of Mg atoms in 5.0 g of this sample. (gram atomic mass of Mg = 24 g ) 2026Calculate the number of moles and molecules of chlorine in 4.48 dm ^3 of chlorine at STP. 2026What is the gram atomic mass of an element whose mass of one atom is 3.9853 10⁻²³ g ? 2026Calculate the total mass and number of molecules present in 3 moles of benzene. 2026Which of the following gases has high vapour density at same temperature and pressure? 2026What is the number of moles of Cl atoms present in n moles of tear gas and in n moles of mustard gas respectively? 2026 Full Some Basic Concepts of Chemistry list All NEET PYQs