Please wait...

Chemistry Test 136
Menu grid icon
Result Result point icon
Chemistry Test 136
  • Goals icon

    /

    Score
  • Trophy icon

    -

    Rank
White alarm icon Time Taken: -
Result frame illustration
  • Question 1/10
    4 / -1

    Coal gas is a mixture of

    Solutions

    Coal gas contains a variety of calorific gases including hydrogen, carbon monoxide, methane, ethylene and volatile hydrocarbons together with small quantities of non-calorific gases such as carbon dioxide and nitrogen.

     

  • Question 2/10
    4 / -1

    Formic acid (HCOOH) on heating with concentrated H2SO4 gives

    Solutions

    H2SO4 + HCOOH → CO + H2SO4•H2O. 

    Sulfuric acid react with formic acid to produce carbon monoxide and hydrate sulfuric acid.

     

  • Question 3/10
    4 / -1

    Which of the following gases is used for the purification of nickel ?

    Solutions

    CO is the gas used for purification of nickel and this process is called Mond process.

     

  • Question 4/10
    4 / -1

    The most stable oxidation state of boron is

    Solutions

    The elments of the boron family adopts oxidation states +3 or +1. The +3 oxidation states are favorable except for the heavier elements, such as Tl, which prefer the +1 oxidation state due to its stability; this is known as the inert pair effect.

     

  • Question 5/10
    4 / -1

    Which of the following products are formed when boron is fused with NaOH ?

    Solutions

    Boron reacts with fused sodium hydroxide to form sodium borate and hydrogen.

    B + 6NaOH →→ 2Na3BO3 + 3H2

     

  • Question 6/10
    4 / -1

    When borax is dissolved in water,

  • Question 7/10
    4 / -1

    B2H6 reacts with Cl2 to produce

    Solutions

    B2H6 + 6Cl2 → 2BCl3 + 6HCl

    Diborane react with chlorine to produce boron(III) chloride and hydrogen chloride...

     

  • Question 8/10
    4 / -1

    In the Serepeck process, the bauxite ore is treated with

    Solutions

    Serpeck process is a method of purification of Bauxite ore containing silica (SiO2​) as the main impurity.

    The reaction involved are-

    Al2​O3​.2H2​O+3C+N2​⟶2AlN+3CO+2H2​O

    2AlN+6H2​O⟶2NH3​+Al(OH)3​

     

  • Question 9/10
    4 / -1

    Anhydrous AlCl3 produces fumes in the air because of

    Solutions

    Anhydrous aluminium chloride is hydrolised partly with the moisture in the atmosphere to give HCl gas. This HCl gets combine to moisture in air giving white fumes. So white fumes appear by hydrolysis.

     

  • Question 10/10
    4 / -1

    Alzeimer’s diseases is caused by the depostion of

Close button icon
User Profile
-

Correct (-)

Wrong (-)

Skipped (-)

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Mockers logo Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Arrow pointer icon
Click on Allow to receive notifications
Notification bell icon ×
Open Now