Hydrogen Mock Tests

28 questions available

Hydrogen Mock Test 1

Questions: 28

Sample Questions

NEET Chemistry

Hard water does not lather well with soap because:

A It is alkaline in nature

B It contains Ca²⁺ and Mg²⁺ ions which form insoluble precipitates with soap

C It contains Na⁺ ions

D It is always hard in texture

EAPCET Chemistry

Temporary hardness of water is caused by the presence of:

A CaCl₂ and MgCl₂

B Ca(HCO₃)₂ and Mg(HCO₃)₂

C CaSO₄ and MgSO₄

D Ca(NO₃)₂ and Mg(NO₃)₂

EAPCET Chemistry

H₂O₂ acts as both an oxidising and reducing agent in acidic and basic media. Which of the following reactions demonstrates its reducing action?

A 2I⁻ + H₂O₂ + 2H⁺ → I₂ + 2H₂O

B PbS + 4H₂O₂ → PbSO₄ + 4H₂O

C H₂O₂ + 2OH⁻ + 2Mn(OH)₂ → 2MnO(OH)₂ + 2H₂O

D H2O2 + 2Ag+ + 2OH- → Ag2O + H2O + O2

NEET Chemistry

Which of the following is a redox reaction?

A NaCl + AgNO₃ → AgCl + NaNO₃

B HCl + NaOH → NaCl + H₂O

C Zn + CuSO₄ → ZnSO₄ + Cu

D CaCO₃ → CaO + CO₂

EAPCET Chemistry

In the structure of H2O2, the most stable conformation is:

A Non-planar with dihedral angle ~111.5 degrees

B Planar with dihedral angle 180 degrees

C Planar with dihedral angle 0 degrees

D Linear structure

NEET Chemistry

Which of the following is the main constituent of natural gas?

A Propane

B Butane

C Methane

D Ethane

EAPCET Chemistry

Why does water have an anomalously high boiling point compared to other hydrides of group 16?

A High electronegativity of oxygen

B Extensive intermolecular hydrogen bonding

C Linear molecular geometry

D High molecular mass

EAPCET Chemistry

Which of the following is used as an antioxidant in rubber and cosmetics?___SEQ___27

A H₂O₂ (hydrogen peroxide)

B H₂O (water)

C D₂O (heavy water)

D NaH (sodium hydride)

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