Chemistry-
General
Easy
Question
pH, of a buffer solution decrease by 0.02 units when 0.12 g of acetic acid is added to 250 mL of a buffer solution of acetic acid and potassium acetate at 
The buffer capacity of the solution is:
- 0.1
- 10
- 1
- 0.4
The correct answer is: 0.4
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If the Kb value in the hydrolysis reaction 
is 1.0 x 10-6, then the hydrolysis constant of the salt would be:
If the Kb value in the hydrolysis reaction is 1.0 x 10-6, then the hydrolysis constant of the salt would be:
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The solubility of mercurous chloride in water will be given as:
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Electrophiles are :
Electrophiles are :
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Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen’s reaction, the addition of hydrogen takes place in presence of Raney nickel catalyst. Platinum and palladium can also be used catalyst in these reactions. These are heterogeneous catalyst and used in finely divided state. Experimentally, it is observed that less crowded alkenes absorb H2 with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar’s catalyst yields cis product i.e., ‘cis’ alkene. Thus, in presence of Lindlar’s catalyst ‘syn’ addition takes place. The relative rate of hydrogenation follows the order
Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
The product of the following reaction is :
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen’s reaction, the addition of hydrogen takes place in presence of Raney nickel catalyst. Platinum and palladium can also be used catalyst in these reactions. These are heterogeneous catalyst and used in finely divided state. Experimentally, it is observed that less crowded alkenes absorb H2 with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar’s catalyst yields cis product i.e., ‘cis’ alkene. Thus, in presence of Lindlar’s catalyst ‘syn’ addition takes place. The relative rate of hydrogenation follows the order
Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
The product of the following reaction is :
Chemistry-General
Chemistry-
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen’s reaction, the addition of hydrogen takes place in presence of Raney nickel catalyst. Platinum and palladium can also be used catalyst in these reactions. These are heterogeneous catalyst and used in finely divided state. Experimentally, it is observed that less crowded alkenes absorb H2 with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar’s catalyst yields cis product i.e., ‘cis’ alkene. Thus, in presence of Lindlar’s catalyst ‘syn’ addition takes place. The relative rate of hydrogenation follows the order
Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
In which of the following cases, the reaction is most exothermic?
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen’s reaction, the addition of hydrogen takes place in presence of Raney nickel catalyst. Platinum and palladium can also be used catalyst in these reactions. These are heterogeneous catalyst and used in finely divided state. Experimentally, it is observed that less crowded alkenes absorb H2 with faster rate. Controlled hydrogenation of alkyne in presence of Lindlar’s catalyst yields cis product i.e., ‘cis’ alkene. Thus, in presence of Lindlar’s catalyst ‘syn’ addition takes place. The relative rate of hydrogenation follows the order
Non-terminal alkynes are reduced in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
In which of the following cases, the reaction is most exothermic?
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Chlorination of methane involves three steps: chain-initiating, chain-propagating and chain-terminating.
When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Although chlorination of methane is an exothermic, the reaction requires high temperature because
Chlorination of methane involves three steps: chain-initiating, chain-propagating and chain-terminating.
When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Although chlorination of methane is an exothermic, the reaction requires high temperature because
Chemistry-General
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Chlorination of methane involves three steps: chain-initiating, chain-propagating and chain-terminating.
When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Chain-terminating step may involve the formation of
Chlorination of methane involves three steps: chain-initiating, chain-propagating and chain-terminating.
When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Chain-terminating step may involve the formation of
Chemistry-General
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Chlorination of methane involves three steps: chain-initiating, chain-propagating and chain-terminating
When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Chain-propagating steps
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When oxygen is passed through the reaction mixture, chlorination of methane slows down temporarily
Chain-propagating steps
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The two hydrogen atoms in acetylene
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A and B are
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In the figure shown, the total resistance between A and B is
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In the figure, the value of resistors to be connected between C and D so that the resistance of the entire circuit between A and B does not change with the number of elementary sets used is
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Physics-General
