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Grade 10 - Chemistry - Question Paper 3

Quiz by Rajiv Khombare

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30 questions
Show answers
  • Q1

    Group IIA elements are known as :

    Alkaline earth metals

    Halogens

    Noble gases

    Alkali metals

    30s
  • Q2

    Acid uses as an eyewash :

    Oxalic acid

    Formic acid

    Acetic acid

    Boric acid

    30s
  • Q3

    During electrolysis of sodium chloride the gas released at anode is:

    None of these

    Oxygen

    Chlorine

    Hydrogen 

    30s
  • Q4

    Atomic mass of an element expressed in gram is called :

    Gram atomic mass

    Gram molecular mass

    Molecular mass

    Net atomic weight

    30s
  • Q5

    The most ionic compound of periodic table is :

    Caesium chloride

    Potassium chloride

    Sodium chloride

    Magnesium chloride

    30s
  • Q6

    An element used in atomic clocks :

    Francium

    Radon

    Caesium

    Rhodium

    30s
  • Q7

    "Negative LOGARITHM to the base 10 of the hydrogen ion concentration" is known as :

    P-H

    pH

    pOH

    Both pH and pOH

    30s
  • Q8

    Pure metal is made ...................... during electro refining

    Anode

    Cathode

    None of these

    Electrolyte

    30s
  • Q9

    Which of the following is not a hydra acid?

    HCl

    H2S

    H2SO3

    HBr

    30s
  • Q10

    22.4 litres is also called :

    Special volume

    Reduced volume

    Net volume

    Molar volume

    30s
  • Q11

    A compound which contains all the three types of bond i.e. ionic, covalent and co-ordinate is :

    Ammonium chloride

    Sodium chloride

    Calcium chloride

    Ammonia

    30s
  • Q12

    In second period, if we move from Li to F, there is regular decrease in :

    Ionization energy

    Electronegativity

    Atomic mass

    Atomic radius

    30s
  • Q13

    Covalent compounds have low melting point because :

    Covalent molecules are held by weak intermolecular forces of attraction

    Covalent bond is less exothermic

    Covalent bond is weaker than ionic bond

    Covalent molecules have definite shape 

    30s
  • Q14

    The compound with strongest ionic bond is :

    KCl

    RbCl

    MgO

    NaCl

    30s
  • Q15

    The value of Avogadro's constant is

    6.023 x 1022

    60.23 x 1023

    3.01 x 1023

    6.023 x 1023

    30s

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