Acid Bases And Salts CBSE Questions & Answers

Acid Bases And Salts

This is Science Class 10 Acid Bases and Salts CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following salts contains water of crystallization. I. Gypsum II. Epsum salt III. Blue vitriol IV. Glauber’s salt
  • A
    I and II
  • B
    II and IV
  • C
    I, II, III, IV
    Correct
  • D
    III and IV
2
What is the colour of phenolphthalein in soap solution?
  • A
    colorless
    Correct
  • B
    Pink
  • C
    orange
  • D
    blue
3
Which one of the following types of medicines is used for treating acidity?
  • A
    Antacid
    Correct
  • B
    Antibiotic
  • C
    Antiseptic
  • D
    Analgesic
4
A, B, C, D, samples of liquids have PH values of 14.0, 7, 1, 5 respectively. Which of these could be that of 1 M NaOH solution?
  • A
    Sample B
  • B
    Sample C
  • C
    Sample D
  • D
    Sample A
    Correct
5
Name the acid formed when \({\rm{S}}{{\rm{O}}_{\rm{2}}}\) is dissolved in water
  • A
    \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
  • B
    \({{\rm{H}}_{\rm{2}}}{{\rm{S}}_{\rm{2}}}{{\rm{O}}_{\rm{5}}}\)
  • C
    \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{3}}}\)
    Correct
  • D
    \({\rm{HS}}{{\rm{O}}_{\rm{4}}}\)
6
Which of the following conducts electricity? Rain water, distill water, potable water.
  • A
    distill water, potable water
    Correct
  • B
    rain water, distill water
  • C
    All of the above
  • D
    rain water, potable water
7
What is the nature of non metallic oxide
  • A
    acidic oxide
    Correct
  • B
    Neutral oxide
  • C
    Amphoteric
  • D
    basic oxide
8
“Alcohols and glucose contain hydrogen but are not treated as acids”
  • A
    Partially false
  • B
    True
    Correct
  • C
    0
  • D
    Partially true
9
Lemon contains
  • A
    Tartaric acid
  • B
    Formic acid
  • C
    Lactic acid
  • D
    citric acid
    Correct
10
Which of the following salt is used in Lab to seal air gaps in apparatus so as to make it air light
  • A
    \({\rm{ZnS}}{{\rm{O}}_{\rm{4}}}.{\rm{7 }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
  • B
    \({\rm{MgS}}{{\rm{O}}_{\rm{4}}}.{\rm{ 7 }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
  • C
    \({\rm{CaS}}{{\rm{O}}_{\rm{4}}}.{\rm{ 2}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
  • D
    \({\rm{CaS}}{{\rm{O}}_{\rm{4}}}.{1 \over 2}{H_2}O\)
    Correct
11
Name an indicator which indicates the various levels of hydrogen ion concentration
  • A
    PH paper
    Correct
  • B
    both Litmus paper and PH paper
  • C
    Litmus paper
  • D
    phenolphthalein
12
When conc acid is added to \({{\rm{H}}_{\rm{2}}}{\rm{O}}\), the reaction is
  • A
    Endothermic
  • B
    Neither EXO nor endothermic
  • C
    Exothermic
    Correct
  • D
    No reaction occur
13
Name the substance which on treatment with chlorine yields bleaching powder
  • A
    CuO
  • B
    \({\rm{Ca C}}{{\rm{O}}_{\rm{3}}}\)
  • C
    CaO
    Correct
  • D
    \({\rm{Ca }}{\left( {{\rm{OH}}} \right)_{\rm{2}}}\)
14
Which gas is liberated when HCl is added to a sample of solid \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{C}}{{\rm{O}}_{\rm{3}}}\) ?
  • A
    carbide
  • B
    carbon dioxide
    Correct
  • C
    Nitride
  • D
    carbon mono oxide
15
Which acid and bases are used to prepare \({\rm{NaHC}}{{\rm{O}}_{\rm{3}}}\) ?
  • A
    \({\rm{MgOH}},{\rm{ }}{{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
  • B
    \({\rm{NaOH}},{\rm{ HC}}{{\rm{O}}_{\rm{3}}}^ - \)
  • C
    \({\rm{NaOH}},{\rm{ }}{{\rm{H}}_{\rm{2}}}{\rm{C}}{{\rm{O}}_{\rm{3}}}\)
    Correct
  • D
    \({\rm{Mg}},{\rm{ }}{{\rm{H}}_{\rm{2}}}{\rm{C}}{{\rm{O}}_{\rm{3}}}\)