CBSE Class 7 - Science - CH5 Acids, Bases and Salts (MCQs)

Acids, Bases and Salts 

(MCQs)

Q1: The word acid comes from the Latin word 'acere'  which means
(a) Sweet
(b) Salty
(c) Sour
(d) Neutral


Q2: Which of the following is used in match industry.
(a) Sodium chloride
(b) Sodium bicarbonate
(c) Sodium carbonate
(d) Potassium chlorate


Q3: Acids turns blue litmus to ______
(a) green
(b) yellow
(c) red
(d) black



Q4: Substances which are bitter in taste, feel soapy on touching are known as
(a) Acids
(b) Bases
(c) Indicators
(d) Neutral solution


Q5: Special type of substances used to test whether a substance is acidic/basic are known as
(a) Indicators
(b) Acids
(c) Bases
(d) Salt


Q6: Which of the following is a strong acid?

(a) acetic acid
(b) nitric acid
(c) lactic acid
(d) citric acid


Q7: The most commonly used natural indicator’ Litmus’ is extracted from
(a) Lichens
(b) Turmeric
(c) Beet Root
(d) China rose


Q8: Which of the following colours is given by phenolphthalein in a basic salt solution.
(a) yellow
(b) pink
(c) orange red
(d) colourless


Q9: Acetic acid is found in
(a) Curd
(b) Spinach
(c) Vinegar
(d) Citrus fruits



Q10: Lactic acid is found in
(a) Curd
(b) Soap
(c) Apple
(d) Lime


Q11: Sodium hydroxide is found in
(a) Lemon
(b) Soap
(c) Oil of Vitriol
(d) Table Salt


Q12:  Chemical name of Oil of Vitriol is __________

(a) Nitric acid
(b) Acetic acid
(c) Sulphuric acid
(d) Sodium Hydroxide



Answers:
1: (c) Sour
2: (d) Potassium chlorate
3: (c) red 
4: (b) Bases
5: (a) Indicators
6: (b) nitric acid
7: (a) Lichens
8: (b) pink
9: (c) Vinegar
10: (a) Curd
11: (b) Soap
12: (c) Sulphuric acid