CBSE Class 7 Science Acids Bases and Salts MCQs
Refer to CBSE Class 7 Science Acids Bases and Salts MCQs provided below available for download in Pdf. The MCQ Questions for Class 7 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 5 Acids Bases and Salts are an important part of exams for Class 7 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 7 Science and also download more latest study material for all subjects
नीचे दिए गए CBSE कक्षा 7 विज्ञान अम्ल क्षार और लवण MCQs देखें जो पीडीएफ में डाउनलोड के लिए उपलब्ध हैं। कक्षा 7 विज्ञान के लिए MCQ प्रश्न उत्तर के साथ CBSE, NCERT और KVS द्वारा सुझाए गए नवीनतम पाठ्यक्रम और परीक्षा पैटर्न के अनुसार संरेखित हैं। अध्याय 5 अम्ल क्षार और लवण के लिए बहुविकल्पीय प्रश्न कक्षा 7 विज्ञान के लिए परीक्षाओं का एक महत्वपूर्ण हिस्सा हैं और यदि ठीक से अभ्यास किया जाए तो आपको अपनी समझ को बेहतर बनाने और उच्च अंक प्राप्त करने में मदद मिल सकती है। CBSE कक्षा 7 विज्ञान के लिए अधिक अध्याय-वार MCQs देखें और सभी विषयों के लिए अधिक नवीनतम अध्ययन सामग्री भी डाउनलोड करें
MCQ for Class 7 Science Chapter 5 Acids Bases and Salts
Class 7 Science students should refer to the following multiple-choice questions with answers for Chapter 5 Acids Bases and Salts in Class 7.
कक्षा 7 विज्ञान के छात्रों को कक्षा 7 के अध्याय 5 अम्ल, क्षार और लवण के उत्तर के साथ निम्नलिखित बहुविकल्पीय प्रश्नों का संदर्भ लेना चाहिए।
Chapter 5 Acids Bases and Salts MCQ Questions Class 7 Science with Answers
Acids, Bases, and Salts
Question. Acids are
(a) Sour in taste
(b) Sweet in taste
(c) salty in taste
(d) Bitter in taste
Answer: A
Question. Bases are
(a) Sour in taste
(b) Sweet in taste
(c) salty in taste
(d) Bitter in taste
Answer: D
Question. The substances that are used to test whether a substance is acidic or basic is called
(a) Indicator
(b) Acid
(c) Base
(d) Salt
Answer: A
Question. Give the chemical name of Lime water
(a) Calcium hydroxide
(b) Magnesium hydroxide
(c) Ammonium hydroxide
(d) Sodium hydroxide
Answer: A
Question. Give the chemical name of Milk of magnesia
(a) Calcium hydroxide
(b) Magnesium hydroxide
(c) Ammonium hydroxide
(d) Sodium hydroxide
Answer: B
Question. Give the chemical name of Window cleaner
(a) Calcium hydroxide
(b) Magnesium hydroxide
(c) Ammonium hydroxide
(d) Sodium hydroxide
Answer: C
Question. Litmus paper (purple colour) in distilled water when added to an acid changes to
(a) Red
(b) Blue
(c) Green
(d) Violet
Answer: A
Question. The solutions which do not change the colour of either red or blue litmus are known as
(a) Acid Solutions
(b) Base Solutions
(c) Neutral Solutions
(d) indicator
Answer: C
Question. Find the natural indicator from the following
(a) China Rose
(b) Vinegar
(c) Phenolphthalein
(d) Methyl Orange
Answer: A
Question. Phenolphthalein gives ____________colour in acid medium
(a) Pink
(b) Colourless
(c) Green
(d) Red
Answer: A
Question. The sting of an ant contains ___________.
(a) Hydrochloric acid
(b) Formic acid
(c) sulphuric acid
(d) Ethanoic acid
Answer: B
Question. The effect of sting of an ant can be neutralised by rubbing with
(a) Calcium carbonate
(b) Sodium Carbonate
(c) Sodium hydrogen carbonate
(d) Calciumchloride
Answer: C
Question. Blue litmus paper is dipped in a solution. It remains blue. What is the nature of solution ?
(a) Acid and base
(b) Base and neutral
(c) Acid apd neutral
(d) None of these
Answer: B
Question. Which feels soapy on touch ?
(a) Acids
(b) Bases
(c) Both (a) and (b)
(d) None of these
Answer: B
Question. Litmus is extracted from
(a) curd
(b) grapes
(c) lichens
(d) cabbage
Answer: C
Question. Process in which acids and bases react to form salt and water is called
(a) neutralisation
(b) hydrogenation
(c) sublimation
(d) all of these
Answer: C
Question. On
adding phenolphthalein indicator to a colourless solution, no change is
observed. What is the nature of this solution?
(a) Basic
(b) Either acidic or basic
(c) Either acidic or neutral
(d) Either basic or neutral
Answer: C
Question. Acid used in eye wash is
(a) carbonic acid
(b) acetic acid
(c) benzoic acid
(d) boric acid
Answer: D
Question. When
CO2 gas is passed through limewater, it turns milky. Which of the
following compounds is responsible for this milkiness ?
(a) Calcium oxide
(b) Calcium chloride
(c) sodium carbonate
(d) Calcium carbonate
Answer: D
Question. Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed.
(a) Yellow in both acid and base
(b) Yellow in acid and red in base
(c) Pink in acid and yellow in base
(d) Red in acid and blue in base
Answer: B
Question. Acids taste
(a) sour
(b) sweet
(c) bitter
(d) salty
Answer: A
Question. Neutralisation reactioñ is a
(a) physical and reversible change
(b) physical and irreversible change
(c) chemical and reversible change
(d) chemical and irreversible change
Answer: D
Question. How will you classify the reaction between NaOH (aq) and HCl (aq)?
(a) Conbination
(b) Displacement
(c) Dissociation
(d) Neutralisation
Answer: D
Question. When we suffer from acidity, we should take
(a) iron tonic
(b) vitamins
(c) antacid
(d) lactocalamine
Answer: C
Question. The nature of bases is
(a) acidic
(b) basic
(c) neutral
(d) all of these
Answer: B
Question. Common salt is
(a) acidic
(b) basic
(c) neutral
(d) none of these
Answer: C
Question. The acid that our stomach releases is:
(a) sulphuric acid
(b) nitric acid
(c) hydrochloric acid
(d) formic acid
Answer: C
Question. The most commonly used natural indicator is
(a) turmeric
(b) beetroot
(c) China rose petal
(d) litmus
Answer: D
Question. In neutralisation reaction:
(a) heat is absorbed
(b) heat is evolved
(c) neither heat is absorbed nor evolved
(d) none of these
Answer: B
Question. When phenolphthalein is added to a acidic solution, it gives
(a) pink colour
(b) red colour
(c) blue colour
(d) no colour
Answer: D
Question. Neutralisation is a reaction between
(a) two acids
(b) two bases
(c) one acid and one base
(d) one acid and one neutral substance
Answer: C
Question. Which of the following substances makes the fruits sound.
(a) Acids
(b) Salts
(c) Bases
(d) None of these
Answer: A
Question. The colour of litmus in distilled water is:
(a) red
(b) green
(c) blue
(d) purple
Answer: D
Question. Ammonia that turns red litmus blue is:
(a) acidic
(b) basic
(c) neutral
(d) none of these
Answer: B
Question. If the soil is too basic, it is treated with:
(a) quicklime
(b) salt
(c) organic matter
(d) water
Answer: C
Question. Which of the following turns colourless solution of phenol¬phthalein into pink solution ?
(a) Salt
(b) Base
(c) Acid
(d) All of these
Answer: B
Question. Magnesium hydroxide is found in:
(a) soap
(b) lime water
(c) milk of magnesia
(d) vegetable
Answer: C