NEET Test Series from KOTA - 10 Papers In MS WORD
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Hydrocarbons
230311
Towards electrophilic reagents
1 Ethene is more reactive than ethyne
2 Ethene is less reactive than ethyne
3 Both have equal reactivity
4 The reactivity of both cannot be predicted
Explanation:
: Towards electrophilic addition reaction, ethene is more reactive than ethyne because ethene has less percent $S$ character than ethyne due to which ethene donate our pi-cloud more than that to ethyne.
MPPET- 2009
Hydrocarbons
230313
The product $\mathrm{Z}$ of the following reaction is $\mathrm{H}_3 \mathrm{CC} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{Z}$
: $\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{H}_3 \mathrm{C}-\mathrm{CBr}_2-\mathrm{CH}_3$ This reaction is followed as Markovnikovs addition.
TS-EAMCET-2016
Hydrocarbons
230316
The gaseous substance which decolourises bromine but does not give a precipitate with ammoniacal silver nitrate is :
1 $\mathrm{C}_2 \mathrm{H}_6$
2 $\mathrm{C}_2 \mathrm{H}_4$
3 $\mathrm{C}_2 \mathrm{H}_2$
4 $\mathrm{CH}_4$
Explanation:
: Ethylene and acetylene decolourise $\mathrm{Br}_2$ water. Acetylene gives precipitate with ammonical $\mathrm{AgNO}_3$ but with ammonical $\mathrm{AgNO}_3$, ethylene do not give any reaction.
AP EAMCET (Medical) -1998
Hydrocarbons
230318
Indentify the statement which is not correct?
1 Dehydrobromination of 2-bromopentane gives pent-1-ene as the major product
2 Freon 12 is manufactured by Swarts reaction
3 $\mathrm{CHCl}_3$ is stored in closed, dark coloured bottles
4 Chronic exposure to $\mathrm{CHCl}_3$ cases liver damage
: Towards electrophilic addition reaction, ethene is more reactive than ethyne because ethene has less percent $S$ character than ethyne due to which ethene donate our pi-cloud more than that to ethyne.
MPPET- 2009
Hydrocarbons
230313
The product $\mathrm{Z}$ of the following reaction is $\mathrm{H}_3 \mathrm{CC} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{Z}$
: $\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{H}_3 \mathrm{C}-\mathrm{CBr}_2-\mathrm{CH}_3$ This reaction is followed as Markovnikovs addition.
TS-EAMCET-2016
Hydrocarbons
230316
The gaseous substance which decolourises bromine but does not give a precipitate with ammoniacal silver nitrate is :
1 $\mathrm{C}_2 \mathrm{H}_6$
2 $\mathrm{C}_2 \mathrm{H}_4$
3 $\mathrm{C}_2 \mathrm{H}_2$
4 $\mathrm{CH}_4$
Explanation:
: Ethylene and acetylene decolourise $\mathrm{Br}_2$ water. Acetylene gives precipitate with ammonical $\mathrm{AgNO}_3$ but with ammonical $\mathrm{AgNO}_3$, ethylene do not give any reaction.
AP EAMCET (Medical) -1998
Hydrocarbons
230318
Indentify the statement which is not correct?
1 Dehydrobromination of 2-bromopentane gives pent-1-ene as the major product
2 Freon 12 is manufactured by Swarts reaction
3 $\mathrm{CHCl}_3$ is stored in closed, dark coloured bottles
4 Chronic exposure to $\mathrm{CHCl}_3$ cases liver damage
: Towards electrophilic addition reaction, ethene is more reactive than ethyne because ethene has less percent $S$ character than ethyne due to which ethene donate our pi-cloud more than that to ethyne.
MPPET- 2009
Hydrocarbons
230313
The product $\mathrm{Z}$ of the following reaction is $\mathrm{H}_3 \mathrm{CC} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{Z}$
: $\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{H}_3 \mathrm{C}-\mathrm{CBr}_2-\mathrm{CH}_3$ This reaction is followed as Markovnikovs addition.
TS-EAMCET-2016
Hydrocarbons
230316
The gaseous substance which decolourises bromine but does not give a precipitate with ammoniacal silver nitrate is :
1 $\mathrm{C}_2 \mathrm{H}_6$
2 $\mathrm{C}_2 \mathrm{H}_4$
3 $\mathrm{C}_2 \mathrm{H}_2$
4 $\mathrm{CH}_4$
Explanation:
: Ethylene and acetylene decolourise $\mathrm{Br}_2$ water. Acetylene gives precipitate with ammonical $\mathrm{AgNO}_3$ but with ammonical $\mathrm{AgNO}_3$, ethylene do not give any reaction.
AP EAMCET (Medical) -1998
Hydrocarbons
230318
Indentify the statement which is not correct?
1 Dehydrobromination of 2-bromopentane gives pent-1-ene as the major product
2 Freon 12 is manufactured by Swarts reaction
3 $\mathrm{CHCl}_3$ is stored in closed, dark coloured bottles
4 Chronic exposure to $\mathrm{CHCl}_3$ cases liver damage
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Hydrocarbons
230311
Towards electrophilic reagents
1 Ethene is more reactive than ethyne
2 Ethene is less reactive than ethyne
3 Both have equal reactivity
4 The reactivity of both cannot be predicted
Explanation:
: Towards electrophilic addition reaction, ethene is more reactive than ethyne because ethene has less percent $S$ character than ethyne due to which ethene donate our pi-cloud more than that to ethyne.
MPPET- 2009
Hydrocarbons
230313
The product $\mathrm{Z}$ of the following reaction is $\mathrm{H}_3 \mathrm{CC} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{Z}$
: $\mathrm{H}_3 \mathrm{C}-\mathrm{C} \equiv \mathrm{CH} \stackrel{2 \mathrm{HBr}}{\longrightarrow} \mathrm{H}_3 \mathrm{C}-\mathrm{CBr}_2-\mathrm{CH}_3$ This reaction is followed as Markovnikovs addition.
TS-EAMCET-2016
Hydrocarbons
230316
The gaseous substance which decolourises bromine but does not give a precipitate with ammoniacal silver nitrate is :
1 $\mathrm{C}_2 \mathrm{H}_6$
2 $\mathrm{C}_2 \mathrm{H}_4$
3 $\mathrm{C}_2 \mathrm{H}_2$
4 $\mathrm{CH}_4$
Explanation:
: Ethylene and acetylene decolourise $\mathrm{Br}_2$ water. Acetylene gives precipitate with ammonical $\mathrm{AgNO}_3$ but with ammonical $\mathrm{AgNO}_3$, ethylene do not give any reaction.
AP EAMCET (Medical) -1998
Hydrocarbons
230318
Indentify the statement which is not correct?
1 Dehydrobromination of 2-bromopentane gives pent-1-ene as the major product
2 Freon 12 is manufactured by Swarts reaction
3 $\mathrm{CHCl}_3$ is stored in closed, dark coloured bottles
4 Chronic exposure to $\mathrm{CHCl}_3$ cases liver damage
