An aqueous solution of glucose is 10% in strength. The volume in which 1g mole
An aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved wil be
Options
(a) 18 L (b) 92 L (c) 0.9 L (d) […]
Chemistry
The weight of one molecule of a compound C₆₀H₁₂₂ is
The weight of one molecule of a compound C₆₀H₁₂₂ is
Options
(a) 1.2 x 10⁻²° gram (b) 1.4 x 10⁻²¹ gram (c) 5.025 x 10²³ gram (d) 6.023 x 10²³ gram
Correct Answer: […]
If 1 mL of water contains 20 drops then number of molecules in a drop of water
If 1 mL of water contains 20 drops then number of molecules in a drop of water is
Options
(a) 6.023 x 10²³ molecules (b) 1.376 x 10²⁶ molecules (c) 1.344 x 10¹⁸ […]
The number of oxygen atoms in 4.4g of CO₂ is
The number of oxygen atoms in 4.4g of CO₂ is
Options
(a) 1.2 x 10²³ (b) 6 x 10²² (c) 6 x 10²³ (d) 12 x 10²³
Correct Answer:
1.2 x 10²³
Explanation: […]
Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85 g of BaCO₃(Atomic mass Ba=137) will be
Options
(a) 2.24 L (b) 4.96 L (c) 1.12L (d) 0.84L
Correct Answer: […]
A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength
A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be(h=6.6 x 10⁻³⁴ Js)
Options
(a) 1.0 x 10⁻³² m (b) 6.6 x 10⁻³² m (c) 6.6 […]
What is the ratio of mass of an electron to the mass of a proton?
What is the ratio of mass of an electron to the mass of a proton?
Options
(a) 1 : 1 (b) 1 : 2 (c) 1 : 3 (d) 1 : 1837
Correct […]
Number of moles of MnO₄⁻ required to oxidize one mole of ferrous oxalate
Number of moles of MnO₄⁻ required to oxidize one mole of ferrous oxalate completely in acidic medium will be
Options
(a) 0.6 moles (b) 0.4 moles (c) 7.5 moles (d) 0.2 moles
Correct Answer: […]
The radius of hydrogen atom in the ground state is 0.53 Å. The radius
The radius of hydrogen atom in the ground state is 0.53 Å. The radius of Li2+ ion (atomic number = 3) in a similar state is
Options
(a) 0.17 Å (b) 0.265 Å […]
What is the [OH⁻] in the final solution prepared by mixing 20 mL of 0.05 M Hcl
What is the [OH⁻] in the final solution prepared by mixing 20 mL of 0.05 M Hcl with 30 mL of 0.1 M Ba(OH)₂?
Options
(a) 0.4 M (b) 0.005 M (c) 0.12 […]