Universal indicator can be used to

to test strong acids and weak acids

to test concentration of a particular solution

Acid become colorless when added with

screened methyl orange indicators

Select the one which is wrongly mapped

Sodium hydroxide ‚Äö√Ñ√∂‚àö√ë‚àö¬® caustic soda

Sodium carbonate ‚Äö√Ñ√∂‚àö√ë‚àö¬® Washing soda

Sodium chloride ‚Äö√Ñ√∂‚àö√ë‚àö¬® common salt

Calcium carbonate ‚Äö√Ñ√∂‚àö√ë‚àö¬® slaked lime

Sodium hydroxide ‚Äö√Ñ√∂‚àö√ë‚àö¬® caustic soda

Which one is correctly matched?

Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range below 7

Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range above7

Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range below 7

Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range 7( neutral)

Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range 8-9

200 + Mcqs in Acids Bases in Organic Chemistry Page 4 McqOptions

151.	Hydroxonium ions are represented as
A.	OH ions
B.	H₂O₃ ions
C.	H₃O ions
D.	H₂O₃
Answer» D. H₂O₃

Discussion

152.	Consider equation P₄O₁₀ + H₂O → H₃PO₄. Moles of water required in reaction would be
A.	2
B.	4
C.	6
D.	8
Answer» D. 8

Discussion

153.	When neutral, indicators show
A.	red color
B.	blue color
C.	yellow/green color
D.	pink color
Answer» D. pink color

Discussion

154.	Each color is associated with a particular pH in
A.	litmus indicator
B.	universal indicator
C.	methyl orange indicator
D.	Phenolphthalein indicators
Answer» C. methyl orange indicator

Discussion

155.	In Universal indicators, a pH of 7 is shown with
A.	yellow color
B.	green color
C.	blue color
D.	pink color
Answer» C. blue color

Discussion

156.	A base which is soluble in water is called
A.	hydrous
B.	alkali
C.	basic
D.	acidic
Answer» C. basic

Discussion

157.	An alkali (OH-) is a
A.	water soluble base
B.	water insoluble base
C.	oil soluble base
D.	oil insoluble base
Answer» B. water insoluble base

Discussion

158.	Soap is
A.	acidic
B.	alkaline
C.	neutral
D.	basic
Answer» C. neutral

Discussion

159.	Consider equation P₄O₁₀ + H₂O → H₃PO₄. number of moles of H₃PO₄ produced by reaction are
A.	2
B.	4
C.	6
D.	8
Answer» C. 6

Discussion

160.	Apples contain
A.	citric acid
B.	malic acid
C.	tartaric acid
D.	acetic acid
Answer» C. tartaric acid

Discussion

161.	Phosphoric acid has formula
A.	H₂PO₃
B.	H₂PO₄
C.	H₃PO₄
D.	H₃PO₃
Answer» D. H₃PO₃

Discussion

162.	NaOH + HCl →
A.	Na(OH)₂ + H₂
B.	NaCl + H₂
C.	NaCl + H₂O
D.	NaCl + H₂ + O₂
Answer» D. NaCl + H₂ + O₂

Discussion

163.	Bases (OH-) are
A.	corrosive
B.	turn litmus from blue to red
C.	turn litmus from red to blue
D.	non-metal oxides
Answer» D. non-metal oxides

Discussion

164.	In Universal indicators, red color shows
A.	strong acids
B.	strong alkalis
C.	weak acids
D.	weak bases
Answer» B. strong alkalis

Discussion

165.	Acids (H+) reacts with metal hydroxides (-OH-) to from
A.	salt and water
B.	salt and hydrogen gas
C.	salt and hydrogen oxides
D.	salt and alkali
Answer» B. salt and hydrogen gas

Discussion

166.	Acids reacts with metal carbonates to form
A.	salt
B.	water
C.	carbon dioxide
D.	all of these
Answer» E.

Discussion

167.	Onion juice is
A.	acidic
B.	alkaline
C.	neutral
D.	basic
Answer» B. alkaline

Discussion

168.	Universal indicator can be used to
A.	test acids and alkalis
B.	to test strong acids and weak acids
C.	to test concentration of a particular solution
D.	both a and b
Answer» E.

Discussion

169.	Weak acids include
A.	H₂CO₃
B.	H₂SO₃
C.	H₂SO₄
D.	both a and b
Answer» E.

Discussion

170.	Acid become colorless when added with
A.	screened methyl orange indicators
B.	phenolphthalein indicator
C.	litmus indicator
D.	universal indicator
Answer» C. litmus indicator

Discussion

171.	PH of 7 is shown through a color of
A.	red
B.	blue
C.	green
D.	yellow
Answer» D. yellow

Discussion

172.	Baking Powder is
A.	acidic
B.	alkaline
C.	neutral
D.	salty
Answer» C. neutral

Discussion

173.	Insect bites and stinging nettles contain
A.	formic acid
B.	tartaric acid
C.	oxalic acid
D.	malic acid
Answer» B. tartaric acid

Discussion

174.	Acid shows red color with
A.	litmus indicator
B.	universal indicator
C.	methyl orange indicator
D.	all of these
Answer» E.

Discussion

175.	Sea water has a pH of
A.	5
B.	7
C.	9
D.	11
Answer» D. 11

Discussion

176.	Non-metal oxides showing no reaction with acids or alkalis are called as
A.	Amphoteric acids
B.	neutral oxides
C.	acidic oxides
D.	basic oxides
Answer» C. acidic oxides

Discussion

177.	Lemon juice has a pH of
A.	2
B.	6
C.	8
D.	12
Answer» B. 6

Discussion

178.	Amphoteric oxides react with acids to form
A.	salt
B.	water
C.	a sweet base
D.	both a and b
Answer» E.

Discussion

179.	NH₄Cl(s) + NaOH →
A.	Na₂CO₃ + H₂+NO₂
B.	Na₂CO₃.(H₂O)₅ + HCl
C.	NaCl + H₂O + NH₃
D.	NaCl + HNO₃
Answer» D. NaCl + HNO₃

Discussion

180.	Consider equation PbO + HCl → PbCl₂ + H₂O. Moles of HCl required to balance equation are
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

181.	Chemical formula of Caustic soda is
A.	NaOH
B.	KOH
C.	MgO
D.	Ca(OH)₂
Answer» B. KOH

Discussion

182.	In Universal indicators, weak alkalis are indicated through
A.	turquoise color
B.	blue color
C.	light violet color
D.	all of these
Answer» E.

Discussion

183.	Bleach has an approximate of
A.	5
B.	8
C.	11
D.	14
Answer» D. 14

Discussion

184.	Best indicator of all is
A.	litmus indicator
B.	universal indicator
C.	methyl orange indicator
D.	Phenolphthalein indicators
Answer» C. methyl orange indicator

Discussion

185.	Orange juice is
A.	acidic
B.	alkaline
C.	neutral
D.	basic
Answer» B. alkaline

Discussion

186.	K₂O + H₂O →
A.	K(OH)₃
B.	KOH
C.	KOH.H₂O
D.	KO + H₂ + O₂
Answer» C. KOH.H₂O

Discussion

187.	When an acid (H+) is added to alkali (OH-), product is
A.	hydroxides
B.	water
C.	salts
D.	hydrogen gas
Answer» D. hydrogen gas

Discussion

188.	More corrosive acid is
A.	H₂CO₃
B.	H₂SO₃
C.	HNO₃
D.	C₆H₈O₇
Answer» D. C₆H₈O₇

Discussion

189.	Excess acidity caused by acid rain can be neutralized by adding
A.	more fertilizers
B.	by removing the acidified soil
C.	by adding P₂O₅
D.	by adding lime
Answer» E.

Discussion

190.	Mineral acids are
A.	naturally occurring
B.	man made
C.	include malic acid
D.	include formic acid
Answer» B. man made

Discussion

191.	WHAT_WILL_BE_THE_PRODUCT_WHEN_HNO3_REACTS_WITH_NH4OH_??$
A.	NH<sub>4</sub> NO<sub>3</sub>
B.	2NH<sub>4</sub> NO<sub>3</sub>
C.	NH<sub>4</sub> (NO<sub>3</sub>)<sup>2</sup>
D.	NH<sub>2</sub>NO<sub>3</sub>
Answer» B. 2NH<sub>4</sub> NO<sub>3</sub>

Discussion

192.	Find_the_odd_one_out:$
A.	Neutral salt : NaCl
B.	Acid salt : CuSO<sub>4</sub>.5H<sub>2</sub>O
C.	Basic salt: CuCO<sub>3</sub>.Cu(OH)<sup>2</sup>
D.	Nonhydrated salt: KNO<sub>3</sub>
Answer» C. Basic salt: CuCO<sub>3</sub>.Cu(OH)<sup>2</sup>

Discussion

193.	What is the pH of 0.0001 molar HCl solution?
A.	1
B.	2
C.	3
D.	4
Answer» E.

Discussion

194.	Which one will change from red litmus to blue?
A.	NaCl
B.	HCl
C.	KOH
D.	LiOH
Answer» C. KOH

Discussion

195.	Select the one which is neither an acid nor base
A.	CH<sub>3</sub>COOH
B.	HCl
C.	KCl
D.	CH<sub>3</sub>OH
Answer» D. CH<sub>3</sub>OH

Discussion

196.	MgO + 2HCl ‚Äö√Ñ√∂‚àö√ë‚àö√Ü-> X + H₂O$
A.	Mg<sub>2</sub>Cl
B.	2MgCl
C.	MgCl
D.	MgCl<sub>2</sub>
Answer» E.

Discussion

197.	Select the one which is wrongly mapped
A.	Sodium carbonate ‚Äö√Ñ√∂‚àö√ë‚àö¬® Washing soda
B.	Sodium chloride ‚Äö√Ñ√∂‚àö√ë‚àö¬® common salt
C.	Calcium carbonate ‚Äö√Ñ√∂‚àö√ë‚àö¬® slaked lime
D.	Sodium hydroxide ‚Äö√Ñ√∂‚àö√ë‚àö¬® caustic soda
Answer» D. Sodium hydroxide ‚Äö√Ñ√∂‚àö√ë‚àö¬® caustic soda

Discussion

198.	When an acid reacts with a metal, which one of the following gas is usually liberated?
A.	ammonia gas
B.	chlorine
C.	oxygen
D.	Hydrogen gas
Answer» E.

Discussion

199.	A Strong acid is same as concentrated acid. State true or false
A.	False
B.	True
Answer» B. True

Discussion

200.	Which one is correctly matched?
A.	Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range above7
B.	Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range below 7
C.	Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range 7( neutral)
D.	Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range 8-9
Answer» B. Acids ‚Äö√Ñ√∂‚àö√ë‚àö¬® pH range below 7

Discussion

Explore topic-wise MCQs in Organic Chemistry.

Hydroxonium ions are represented as

Consider equation P₄O₁₀ + H₂O → H₃PO₄. Moles of water required in reaction would be

When neutral, indicators show

Each color is associated with a particular pH in

In Universal indicators, a pH of 7 is shown with

A base which is soluble in water is called

An alkali (OH-) is a

Soap is

Consider equation P₄O₁₀ + H₂O → H₃PO₄. number of moles of H₃PO₄ produced by reaction are

Apples contain

Phosphoric acid has formula

NaOH + HCl →

Bases (OH-) are

In Universal indicators, red color shows

Acids (H+) reacts with metal hydroxides (-OH-) to from

Acids reacts with metal carbonates to form

Onion juice is

Universal indicator can be used to

Weak acids include

Acid become colorless when added with

PH of 7 is shown through a color of

Baking Powder is

Insect bites and stinging nettles contain

Acid shows red color with

Sea water has a pH of

Non-metal oxides showing no reaction with acids or alkalis are called as

Lemon juice has a pH of

Amphoteric oxides react with acids to form

NH₄Cl(s) + NaOH →

Consider equation PbO + HCl → PbCl₂ + H₂O. Moles of HCl required to balance equation are

Chemical formula of Caustic soda is

In Universal indicators, weak alkalis are indicated through

Bleach has an approximate of

Best indicator of all is

Orange juice is

K₂O + H₂O →

When an acid (H+) is added to alkali (OH-), product is

More corrosive acid is

Excess acidity caused by acid rain can be neutralized by adding

Mineral acids are

WHAT_WILL_BE_THE_PRODUCT_WHEN_HNO3_REACTS_WITH_NH4OH_??$

Find_the_odd_one_out:$

What is the pH of 0.0001 molar HCl solution?

Which one will change from red litmus to blue?

Select the one which is neither an acid nor base

MgO + 2HCl ‚Äö√Ñ√∂‚àö√ë‚àö√Ü-> X + H2O$

Select the one which is wrongly mapped

When an acid reacts with a metal, which one of the following gas is usually liberated?

A Strong acid is same as concentrated acid. State true or false

Which one is correctly matched?

MgO + 2HCl ‚Äö√Ñ√∂‚àö√ë‚àö√Ü-> X + H₂O$