Acids and Bases English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

8th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. Acids are ________ in taste.

    (a)

    sour

    (b)

    sweet

    (c)

    bitter

    (d)

    salty

  2. Aqueous solutions of _________ conduct electricity.

    (a)

    acid

    (b)

    base

    (c)

    salt

    (d)

    salt and base

  3. In acidic solutions blue litmus changes into ______ colour.

    (a)

    blue

    (b)

    green

    (c)

    red

    (d)

    white

  4. The base is a substance that gives _____ on dissolving in water.

    (a)

    OH-

    (b)

    H+

    (c)

    OH

    (d)

    H

  5. Sodium hydroxide is a ____________

    (a)

    acid

    (b)

    base

    (c)

    oxide

    (d)

    alkali

  6. Red ant sting contains __________

    (a)

    acetic acid

    (b)

    sulphuric acid

    (c)

    oxalic acid

    (d)

    formic acid

  7. Magnesium hydroxides are used for treating_______

    (a)

    acidity

    (b)

    head pain

    (c)

    teeth decay

    (d)

    None of these

  8. Acid mixed with base forms ________

    (a)

    salt and water

    (b)

    salt

    (c)

    water

    (d)

    No reaction

  9. We brush our teeth with tooth paste because it is __________ in nature.

    (a)

    basic

    (b)

    acidic

    (c)

    basic and acidic

    (d)

    None of these

  10. In basic solution turmeric indicator paper changes from yellow to __________

    (a)

    blue

    (b)

    green

    (c)

    yellow

    (d)

    red

*****************************************

Reviews & Comments about 8th Standard Science Acids and Bases English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

Write your Comment