Distinguish Between : - Science STD 10 Questions - Vidyadip

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6 questions · self-marked practice — reveal the answer and mark yourself.

Question 14 Marks

Ethanol and Ethanoic acid (Chemical Properties)

Answer

	Ethanol		Ethanoic acid
$(i)$	It does not react with $NaHCO_3.$	$(i)$	It gives $CO_2$ with $NaHCO_3.$
$(ii)$	It burns with blue flame.	$(ii)$	It does not burm with blue flame.
$(iii)$	It does not affect blue litmus.	$(iii)$	It turns blue litmus red.

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Question 24 Marks

Ethanol and Ethanoic acid (physical properties)

Answer

	Ethanol		Ethanoic Acid
(i)	It has a specific smell.	(i)	It has vinegar like smell.
(ii)	It has burning taste.	(ii)	It is sour in taste.
(iii)	It does not freeze in winters.	(iii)	It freezes in winters.
(iv)	Boiling point is 78°C.	(iv)	Boiling point is 118°C.

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Question 34 Marks

Covalent compounds and Ionic compounds.

Answer

	Covalent compounds		Ionic compounds
(i)	These compounds are formed due to sharing of electrons.	(i)	These compounds are formed due to transfer of electrons.
(ii)	They exist as solid, liquid and gases.	(ii)	They exist as solids.
(iii)	Covalent compounds have low melting and boiling points.	(iii)	Ionic compounds have high melting and boiling points.
(iv)	They are generally insoluble in water.	(iv)	They are mostly soluble in water.
(v)	They do not conduct electricity in molten or in aqueous solution.	(v)	They conduct electricity in molten state and in aqueous solution.

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Question 44 Marks

Alkenes and Alkynes.

Answer

	Alkenes		Alkynes
$(i)$	The hydrocarbons which contains carbon to carbon double bonds $(C=C)$ are called alkenes.	$(i)$	The hydrocarbons which contain carbon to carbon triple bonds $(C=C)$ are called alkynes.
$(ii)$	Their general formula is $C_nH_{2n}$	$(ii)$	Their general formula is $C_nH_{2n-2}.$

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Question 54 Marks

Alkanes and Alkenes

Answer

	Alkanes		Alkenes
$(i)$	Hydrocarbons containing carbon to carbon single bonds $(C-C)$ only are called alkanes or Paraffins.	$(i)$	The hydrocarbon which contain carbon to carbon double bonds $(C=C)$ are called Alkenes or Olefins.
$(ii)$	Their general formula is $C_nH_{2n+2}$	$(ii)$	Their general formula is $C_nH_{2n}$
$(iii)$	They are chemically less reactive.	$(iii)$	They are chemically more reactive.
$(iv)$	They undergo substitution reaction.	$(iv)$	They undergo addition reaction.

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Question 64 Marks

Saturated and unsaturated Hydrocarbons.

Answer

	Saturated Hydrocarbons		Unsaturated Hydrocarbons
$(i)$	They have $C-C$ single bonds.	$(i)$	They have $C-C$ double or triple bonds.
$(ii)$	The compounds are chemically less reactive.	$(ii)$	These compounds are more reactive.
$(iii)$	Substitution reaction is the characteristic property of these hydrocarbons.	$(iii)$	Addition reaction is the characteristic property of these hydrocarbons.
$(iv)$	The general formula is $C_nH_{2n+}$	$(iv)$	The general formula is $C_nH_{2n+2}$ or $C_nH_{2n}$

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Distinguish Between : - Science STD 10 Questions - Vidyadip