Description : What is the synthesis reaction of light ?
Last Answer : The synthesis reaction of light occurs rapidly in bright sunlight ; The reactions that change speed with contact with light are called photochemical reactions
Description : When aniline is heated with glycerol in the presence of sulfuric acid and nitrobenzene, it gives quinoline. This reaction in called (a) Fischer synthesis (b) Skraup synthesis (c) Diazotization (d) Corey-House synthesis
Last Answer : Skraup synthesis
Description : Preparation of a diazonium salt from a primary aromatic amine is known as : (a) Coupling reaction (b) Sandmeyer reaction (c) Diazotization (d) Corey-House synthesis
Last Answer : Diazotization
Description : Which of the following reactions is suitable for the preparation of α-amino acids? (a) Schmidt reaction (b) Hofmann's degradation of amides (c) Strecker's synthesis (b) Reduction of nitro compounds
Last Answer : Strecker's synthesis
Description : The reaction of a sodium alkoxide with an alkyl halide is called (a) Wurtz-Fittig reaction (b) Perkin reaction (c) Williamson's synthesis (d) Aldol condensation
Last Answer : Williamson's synthesis
Description : If a hydrocarbon reacts with a diatomic molecule of oxygen would it be a combustion, synthesis, or single or double replacement reaction?
Last Answer : answer:Say the two are isolated in a certain area and it’s hot enough to get them to collide. I think you’d get HCO2. So synthesis. And I’ve read that HCO2 has to do with, “The Lewis Structure.” I’d try e-mailing a chemistry, physics or an astronomy professor if I were you.
Description : Explain how during light reaction of photosynthesis, ATP synthesis is a chemiosmotic phenomenon. -Biology
Last Answer : answer:
Description : `ATP` synthesis during light reaction is
Last Answer : `ATP` synthesis during light reaction is A. Oxidative phosphorylation B. Photolysis C. Photophosphorylation D. Phosphorylation
Description : Column 1,2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively For the synthesis of benzoic acid, the only CORR
Last Answer : Column 1,2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively For the synthesis ... )(ii)(P) D. (III)(iv)(R)
Description : What of the following reactions demonstrates a synthesis reaction A) Mg plus H2SO4 and gt MgSO4 plus H2 B) 2NaCl and gt 2Na plus Cl2 C) C plus O2 and gt CO2 D) Zn plus 2HCl and gt ZnCl2 plus H2?
Last Answer : C+O2 →CO2
Description : What is the synthesis reaction of calcium selenide?
Last Answer : Feel Free to Answer
Description : Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oncogenes
Last Answer : Answer : C
Description : Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oneogenes
Description : The first reaction unique to purine nucleotide synthesis is catalysed by (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Phosphoribosyl glycinamide synthetase (D) Formyl transferase
Last Answer : Answer : B
Description : An important reaction for the synthesis of amino acid from carbohydrate intermediates is transamination which requires the cofactor: (A) Thiamin (B) Riboflavin (C) Niacin (D) Pyridoxal phosphat
Last Answer : Answer : D
Description : Regulator gene controls chemical synthesis (Operon concept) by (a) Inhibiting transcription of mRNA (b) Inhibiting enzymes (c) Inhibiting passage of mRNA (d) Inhibiting substrate enzyme reaction
Last Answer : Ans. ((a))
Description : Genes control (a) Protein synthesis but not heredity (b) Protein synthesis and heredity (c) Heredity but not protein synthesis (d) Biochemical reaction of some enzymes
Last Answer : Ans:(b)
Description : Read the following four statements, (i), (ii), (iii) and (iv) and select the right option having both correct statements. Statements : (i) Z scheme of light reaction takes place in presence of PSI only. (ii) Only PSI is ... and (iv) (b) (i) and (ii) (c) (ii) and (iii) (d) (iii) and (iv)
Last Answer : (a) (ii) and (iv)
Description : Which is a catalyst promoter used in catalytic ammonia synthesis reaction? (A) Al2O3 (B) Cr2O3 (C) K2O (D) MnO
Last Answer : (C) K2O
Description : Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature (A) Rate of reaction is very low ... (C) Space velocity of gas is very low resulting in decreased conversion (D) None of these
Last Answer : (A) Rate of reaction is very low
Description : Ammonia synthesis reaction is (A) Exothermic (B) Endothermic (C) Autocatalytic (D) None of these
Last Answer : (A) Exothermic
Description : In ammonia synthesis (N2 + 3H2 = 2NH3 ), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should becarried out at (A) Low pressure (B) High pressure (C) Very high temperature (D) Atmospheric pressure; as the pressure has no effect on conversion
Last Answer : (B) High pressure
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
Description : Which of the following is an autocatalytic reaction? (A) Photochemical reactions (B) Microbial fermentation reactio (C) Enzyme fermentation reaction (D) Ammonia synthesis reaction
Last Answer : (B) Microbial fermentation reaction
Description : Pick out the wrong statement. (A) Use of different catalysts in a reversible catalytic chemical reaction does not change the equilibrium composition (B) Alumina is added as a promoter to ... Arrhenius plot (D) Presence of inerts affects the equilibrium conversion of reactants in a chemical reaction
Last Answer : (C) Activation energy for a reaction is obtained from the intercept of the Arrhenius plot
Description : Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ⇌ 2NH3 . (A) Increases (B) Decreases (C) Remains unchanged (D) Unpredictable from the data
Last Answer : (A) Increases
Description : A typical example of an exothermic reversible reaction conducted at high pressure in industry is (A) Dehydration of ethanol (B) Methanol synthesis (C) Reformation of methane (D) Polymerisation of ethylene
Last Answer : (A) Dehydration of ethanol
Description : Multistage catalytic converter is not used in the (A) Conversion of SO2 to SO3 (B) NH3 synthesis reaction (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (B) NH3 synthesis reaction
Description : In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by (A) High temperature (B) Low pressure (C) Low temperature only (D) Both low temperature and high pressure
Last Answer : (D) Both low temperature and high pressure
Description : What is the name for a chemical reaction that builds up larger molecules? a. dehydration synthesis b. hydrolysis c. reactants d. products
Last Answer : a. dehydration synthesis
Description : In what type of chemical reaction are the products of water removed during the formation of covalent bonds? a. Hydrolysis b. Ionization c. Dehydration synthesis d. Decomposition
Last Answer : c. Dehydration synthesis
Description : The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = - 22.4 kcal, is (A) Endothermic (B) Exothermic (C) Isothermal (D) Adiabatic
Description : The metabolic reaction requiring vitamin B12 but not folate is: A. Conversion of malonic acid to succinic acid B. Conversion of homocysteine to methionine C. Conversion of serine to glycine D. Thymidylate synthesis
Last Answer : A. Conversion of malonic acid to succinic acid