Combustion of a candle is a/an (1) photochemical reaction (2) physical change (3) endothermic reaction (4) exothermic reaction

Combustion of a candle is a/an (1) photochemical reaction (2) physical change (3) endothermic reaction (4) exothermic reaction
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exothermic reaction
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Combustion of a candle is a/an - (1) photochemical reaction (2) physical change (3) endothermic reaction (4) exothermic reaction

Description : Combustion of a candle is a/an - (1) photochemical reaction (2) physical change (3) endothermic reaction (4) exothermic reaction

Last Answer : (4) exothermic reaction Explanation: In theory, a candle is made of a solid hydrocarbon called paraffin. When the solid burns, the hydrocarbon reacts with oxygen to form carbon dioxide and water. The reaction is exothermic, meaning it releases heat to the atmosphere along with the other products.

The reaction between oxygen and organic material is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Biochemical (D) Photochemical

Description : The reaction between oxygen and organic material is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Biochemical (D) Photochemical

Last Answer : (A) Exothermic

The combustion reaction, C + O2 = CO2 , is (A) Exothermic (B) Endothermic (C) Autocatalytic

Description : The combustion reaction, C + O2 = CO2 , is (A) Exothermic (B) Endothermic (C) Autocatalytic

Last Answer : (A) Exothermic

Combustion reaction of fuels is a/an __________ reaction. (A) Auto catalytic (B) Exothermic (C) Endothermic (D) None of these

Description : Combustion reaction of fuels is a/an __________ reaction. (A) Auto catalytic (B) Exothermic (C) Endothermic (D) None of these

Last Answer : (B) Exothermic

The combustion reaction, C + O2 = CO2 , is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these

Description : The combustion reaction, C + O2 = CO2 , is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these

Last Answer : (A) Exothermic

Combustion process is an a) Endothermic b) exothermic c) isothermal d) none of the above

Description : Combustion process is an a) Endothermic b) exothermic c) isothermal d) none of the above

Last Answer : b) exothermic

Combustion process is a) Endothermic b) Exothermic c) isothermal d) None of the above

Description : Combustion process is a) Endothermic b) Exothermic c) isothermal d) None of the above

Last Answer : b) Exothermic

Pick out the correct statement. (A) A chemical reaction accompanied by absorption of heat is called an exothermic reaction (B) A chemical reaction accompanied by evolution of heat is called an endothermic reaction (C) The rate constant for a first order reaction does not change on changing the concentration units (D) Chemical equilibrium state is dynamic in nature

Description : Pick out the correct statement. (A) A chemical reaction accompanied by absorption of heat is called an exothermic reaction (B) A chemical reaction accompanied by evolution of heat is called an ... does not change on changing the concentration units (D) Chemical equilibrium state is dynamic in nature

Last Answer : (C) The rate constant for a first order reaction does not change on changing the concentration units

The process of dissolving an acid or a base in water is a highly - (1) Exothermic reaction (2) Endothermic reaction (3) Sublimation reaction (4) Redux reaction

Description : The process of dissolving an acid or a base in water is a highly - (1) Exothermic reaction (2) Endothermic reaction (3) Sublimation reaction (4) Redux reaction

Last Answer : (1) Exothermic reaction Explanation: The process of dissolving an acid or a base in water is a highly exothermic one. This is why care must be taken while mixing concentrated nitric acid or sulphuric acid with water.

Photochemical reaction rate does not depend significantly on temperature, because (A) It is a reversible reaction (B) It is an exothermic reaction (C) The energy of reacting molecules exceeds the activation energy by absorption of light (D) None of these

Description : Photochemical reaction rate does not depend significantly on temperature, because (A) It is a reversible reaction (B) It is an exothermic reaction (C) The energy of reacting molecules exceeds the activation energy by absorption of light (D) None of these

Last Answer : (C) The energy of reacting molecules exceeds the activation energy by absorption of light

Is caramelizing sugar a endothermic or exothermic reaction?

Description : Is caramelizing sugar a endothermic or exothermic reaction?

Last Answer : This is an endothermic reaction.

Is a match is lit and Burns endothermic or exothermic reaction?

Description : Is a match is lit and Burns endothermic or exothermic reaction?

Last Answer : Need answer

Is acid rain an exothermic or endothermic reaction?

Description : Is acid rain an exothermic or endothermic reaction?

Last Answer : No

Cracking is (A) An exothermic reaction(B) An endothermic reaction(C) Favoured at very low temperature(D) None of these

Description : Cracking is (A) An exothermic reaction (B) An endothermic reaction (C) Favoured at very low temperature (D) None of these

Last Answer : (B) An endothermic reaction

C6H12O6 (aq) + 602(aq) →6CO2(aq) + 6H2O The above reaction is a/an (a) displacement reaction (b) endothermic reaction (c) exothermic reaction (d) neutralisation reaction

Description : C6H12O6 (aq) + 602(aq) →6CO2(aq) + 6H2O The above reaction is a/an (a) displacement reaction (b) endothermic reaction (c) exothermic reaction (d) neutralisation reaction

Last Answer : Answer: (c)

Pick out the wrong statement (A) Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance (B) In case of gas absorption, HETP is equal to HTU, when both the operating line & the equilibrium lines are parallel (C) Hatta number is important in case of gas absorption with chemical reaction (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process

Description : Pick out the wrong statement (A) Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance (B) In case of gas absorption, HETP is ... reaction (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process

Last Answer : (D) In actual practice, absorption is an endothermic process, while stripping is an exothermic process

All decomposition reaction are endothermic but decomposition of vegetable matter into compost is exothermic because (a) It is an oxidation reaction (b) decomposition done by microbes (c) releases heat energy (d) all the above

Description : All decomposition reaction are endothermic but decomposition of vegetable matter into compost is exothermic because (a) It is an oxidation reaction (b) decomposition done by microbes (c) releases heat energy (d) all the above

Last Answer : (d) all the above

During decomposition, energy is absorbed in the form of heat, light or electricity for breaking down the reactants which is known as: (a) exothermic reaction (b) endothermic reaction (c) reduction reaction (d) oxidation

Description : During decomposition, energy is absorbed in the form of heat, light or electricity for breaking down the reactants which is known as: (a) exothermic reaction (b) endothermic reaction (c) reduction reaction (d) oxidation

Last Answer : (b) endothermic reaction

During photosynthesis, energy is absorbed by chlorophyll, therefore it is: (a) exothermic reaction (b) endothermic reaction (c) neither exothermic nor endothermic reaction (d) the process takes place in plants only

Description : During photosynthesis, energy is absorbed by chlorophyll, therefore it is: (a) exothermic reaction (b) endothermic reaction (c) neither exothermic nor endothermic reaction (d) the process takes place in plants only

Last Answer : (b) endothermic reaction

Which of the following describes the given graph correctly? Potential energy Reaction Product Substrate B A (a) Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (b) Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (c) Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme. (d) Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme.

Description : Which of the following describes the given graph correctly? Potential energy Reaction Product Substrate B A (a) Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme. (b) ... . (d) Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme.

Last Answer : (b) Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme

The gasification reaction represented by, C + H2O = CO + H2 , is (A) Exothermic (B) Endothermic (C) Catalytic (D) Autocatalytic

Description : The gasification reaction represented by, C + H2O = CO + H2 , is (A) Exothermic (B) Endothermic (C) Catalytic (D) Autocatalytic

Last Answer : (B) Endothermic

Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction. (A) Catalytic (B) Exothermic (C) Endothermic (D) Reversible

Description : Formation of ammonium carbamate by reaction of NH3 with CO2 is a/an __________ reaction. (A) Catalytic (B) Exothermic (C) Endothermic (D) Reversible

Last Answer : (B) Exothermic

Liquid ammonia and 60% nitric acid reaction (which producesammonium nitrate) is(A) Exothermic(B) Endothermic(C) Autocatalytic(D) None of these

Description : Liquid ammonia and 60% nitric acid reaction (which producesammonium nitrate) is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these

Last Answer : (A) Exothermic

Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Autocatalytic (D) Catalytic

Description : Dehydration of ammonium carbamate to yield urea is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Autocatalytic (D) Catalytic

Last Answer : (B) Endothermic

Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction. (A) Reversible (B) Catalytic(C) Exothermic(D) Endothermic

Description : Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction. (A) Reversible (B) Catalytic (C) Exothermic (D) Endothermic

Last Answer : (D) Endothermic

Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction. (A) Catalytic (B) Endothermic (C) Exothermic (D) Autocatalytic

Description : Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction. (A) Catalytic (B) Endothermic (C) Exothermic (D) Autocatalytic

Last Answer : (C) Exothermic

Ammonia synthesis reaction is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these

Description : Ammonia synthesis reaction is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these

Last Answer : (A) Exothermic

Catalytic ammonia synthesis reaction as in Haber's process is (A) Endothermic (B) Exothermic (C) Irreversible (D) None of these

Description : Catalytic ammonia synthesis reaction as in Haber's process is (A) Endothermic (B) Exothermic (C) Irreversible (D) None of these

Last Answer : (B) Exothermic

Conversion increases with increase in temperature in case of a/an__________ reaction.(A) Autocatalytic(B) Irreversible(C) Reversible endothermic(D) Reversible exothermic

Description : Conversion increases with increase in temperature in case of a/an__________ reaction. (A) Autocatalytic (B) Irreversible (C) Reversible endothermic (D) Reversible exothermic

Last Answer : (C) Reversible endothermic

In the reversible reaction of the type, A + B ⇌ AB, in general (A) Both forward and backward reactions will be exothermic (B) Neither of the reactions will be endothermic (C) The combination reaction will be exothermic, while the dissociation reaction will be endothermic (D) The combination reaction will be endothermic, while the dissociation reaction will be exothermic

Description : In the reversible reaction of the type, A + B ⇌ AB, in general (A) Both forward and backward reactions will be exothermic (B) Neither of the reactions will be endothermic (C) ... will be endothermic (D) The combination reaction will be endothermic, while the dissociation reaction will be exothermic

Last Answer : (C) The combination reaction will be exothermic, while the dissociation reaction will be endothermic

In case of a/an __________ chemical reaction, conversion increases with the rise in temperature. (A) Reversible exothermic (B) Irreversible exothermic (C) Irreversible endothermic (D) Reversible endothermic

Description : In case of a/an __________ chemical reaction, conversion increases with the rise in temperature. (A) Reversible exothermic (B) Irreversible exothermic (C) Irreversible endothermic (D) Reversible endothermic

Last Answer : (D) Reversible endothermic

The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions. (A) Autocatalytic (B) Exothermic (C) Endothermic (D) Autothermal

Description : The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions. (A) Autocatalytic (B) Exothermic (C) Endothermic (D) Autothermal

Last Answer : (A) Autocatalytic

In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is__________ (ii) __________(A) (i) exothermic (ii) endothermic (B) (i) exothermic (ii) exothermic (C) (i) endothermic (ii) endothermic (D) (i) endothermic (ii) exothermic.

Description : In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is__________ (ii) __________. (A) (i) exothermic (ii) endothermic (B) (i) exothermic (ii) exothermic (C) (i) endothermic (ii) endothermic (D) (i) endothermic (ii) exothermic

Last Answer : (D) (i) endothermic (ii) exothermic

Hydrogenation of vegetable oils is a/an __________ reaction. (A) Endothermic (B) Autocatalytic (C) Exothermic (D) Homogenous

Description : Hydrogenation of vegetable oils is a/an __________ reaction. (A) Endothermic (B) Autocatalytic (C) Exothermic (D) Homogenous

Last Answer : (C) Exothermic

Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction. (A) Endothermic (B) Exothermic (C) Irreversible (D) Both (B) and (C)

Description : Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction. (A) Endothermic (B) Exothermic (C) Irreversible (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

The gasification reaction represented by, C + H2O = CO + H2 , is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Catalytic (D) Autocatalytic

Description : The gasification reaction represented by, C + H2O = CO + H2 , is a/an __________ reaction. (A) Exothermic (B) Endothermic (C) Catalytic (D) Autocatalytic

Last Answer : (B) Endothermic

The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = - 22.4 kcal, is (A) Endothermic (B) Exothermic (C) Isothermal (D) Adiabatic

Description : The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = - 22.4 kcal, is (A) Endothermic (B) Exothermic (C) Isothermal (D) Adiabatic

Last Answer : (B) Exothermic

Equilibrium constant decreases as the temperature (A) Increases, for an exothermic reaction (B) Decreases, for an exothermic reaction (C) Increases, for an endothermic reaction (D) None of these

Description : Equilibrium constant decreases as the temperature (A) Increases, for an exothermic reaction (B) Decreases, for an exothermic reaction (C) Increases, for an endothermic reaction (D) None of these

Last Answer : (A) Increases, for an exothermic reaction

The energy of activation of exothermic reaction is (A) Zero (B) Negative (C) Very large compared to that for endothermic reaction (D) Not possible to predict

Description : The energy of activation of exothermic reaction is (A) Zero (B) Negative (C) Very large compared to that for endothermic reaction (D) Not possible to predict

Last Answer : (D) Not possible to predict

Melting of ice exemplifies a/an (A) Adiabatic process (B) Endothermic reaction (C) Exothermic reaction (D) Process involving a chemical reaction

Description : Melting of ice exemplifies a/an (A) Adiabatic process (B) Endothermic reaction (C) Exothermic reaction (D) Process involving a chemical reaction

Last Answer : (B) Endothermic reaction

During AT welding reaction is ? (i) Exothermic .* (ii) Endothermic (iii) No Reaction (iv) Heating

Description : During AT welding reaction is ? (i) Exothermic .* (ii) Endothermic (iii) No Reaction (iv) Heating

Last Answer : (i) Exothermic .*

Pick out the wrong statement. (A) Enthalpies of all elements in their standard states are assumed to be zero (B) Combustion reactions are never endothermic in nature (C) Heat of reaction at constant volume is equal to the change in internal energy (D) Clausius-Clapeyron equation is not applicable to melting process

Description : Pick out the wrong statement. (A) Enthalpies of all elements in their standard states are assumed to be zero (B) Combustion reactions are never endothermic in nature (C) Heat of reaction ... to the change in internal energy (D) Clausius-Clapeyron equation is not applicable to melting process

Last Answer : (D) Clausius-Clapeyron equation is not applicable to melting process

What is the effect of endothermic and exothermic reactions on temperature of surroundings.

Description : What is the effect of endothermic and exothermic reactions on temperature of surroundings.

Last Answer : Ans: In endothermic reactions heat is absorbed from the surroundings resulting in decrease of temperature. Whereas heat is evolved in surrounding during exothermic reaction so temperature of surroundings increases.

The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to form carbon dioxide (CO 2 ) and water. Energy is also needed for the fossil fuel to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.

Description : The Classical example of redox reaction is Combustion of fossil fuel. During combustion of fossil fuels, the carbon compound in the fossil fuel reacts with oxygen in the presence of a heat source to ... to react with oxygen, so the energy used in portion of combustion is an endothermic reaction.

Last Answer : Combustion of fossil fuel

What is the difference between an endothermic and an exothermic process?

Description : What is the difference between an endothermic and an exothermic process?

Last Answer : Are you talking about chem reactions? Endothermic reactions absorb energy, exothermic reactions release energy. Exo means outside, endo means inside. So just remember that exothermic means it gives something out and ... in. Also, I'm sure your teacher would love to explain this to you as well.

Is Splitting a gas molecule is exothermic or endothermic?

Description : Is Splitting a gas molecule is exothermic or endothermic?

Last Answer : Need answer

Is mist forming on a mirror endothermic or exothermic?

Description : Is mist forming on a mirror endothermic or exothermic?

Last Answer : The creation of "mist" or steam (condensation) from water is exothermic but the mirror is not experiencing any kind of chemical reaction.

When solid lead chloride dissolves in hot water is this endothermic or exothermic?

Description : When solid lead chloride dissolves in hot water is this endothermic or exothermic?

Last Answer : That would be an endothermic process.

Is cold pack exothermic or endothermic?

Description : Is cold pack exothermic or endothermic?

Last Answer : The process is endothermic.

Can you Classify the following reactions as exothermic or endothermic?

Description : Can you Classify the following reactions as exothermic or endothermic?

Last Answer : Need answer