Description : Reduced glutathione functions in R.B.Cs to (A) Produce NADPH (B) Reduce methemoglobin to hemoglobin (C) Produce NADH (D) Reduce oxidizing agents such as H2O2
Last Answer : D
Description : Methemoglobin can be reduced to haemoglobin by (A) Removal of hydrogen (B) Vitamin C (C) Glutathione (D) Creatinine
Last Answer : Answer : B
Description : Thyroproxidase requires hydrogen peroxide as oxidizing agent. The H2O2 is produced by (A) FADH2 dependent enzyme (B) NADH dependent enzyme (C) NADP dependent enzyme (D) NADPH dependent enzyme
Last Answer : Answer : D
Description : Uric acid on oxidation with alkaline KMnO4 forms : (a) Urea (b) Barbituric acid (c) Allantoin (d) Caffeine
Last Answer : Allantoin
Description : Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids
Last Answer : Acids
Description : Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde (c) Acetic acid (d) Acetaldehyde
Last Answer : Formic acid
Description : Which of the following alkenes gives only acetic acid on oxidation with hot concentrated KMnO4. (a) Ethylene (b) 1-Butene (c) Propene (d) 2-Butene
Last Answer : 2-Butene
Description : What will be the oxidation number of Fe in `K_(3)[Fe(CN)_(6)]` :-
Last Answer : What will be the oxidation number of Fe in `K_(3)[Fe(CN)_(6)]` :- A. `+4` B. `+3` C. `+2` D. Zero
Description : The oxidation number of iron in potassium ferricyanide `[K_(3)Fe(CN)_(6)]` is :-
Last Answer : The oxidation number of iron in potassium ferricyanide `[K_(3)Fe(CN)_(6)]` is :- A. Two B. Six C. Three D. Four
Description : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))]` respectively are :
Last Answer : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2 ... and +4` C. `+3,+4 and +6` D. `+3,+2 and +4`
Description : A blue colour complex is obtained in the analysis of `Fe^(+3)` having formula `Fe_(4)[Fe(CN)_(6)]_(3)` Let a= oxidation number of Iron in the corrdina
Last Answer : A blue colour complex is obtained in the analysis of `Fe^(+3)` having formula `Fe_(4)[Fe(CN)_ ... coordination sphere. Then find the value of (c+a-2b)
Description : A complex compound in which the oxidation number of a metal is zero is - (1) K4 [Fe (CN)6] (2) K3 [Fe (CN)6] (3) [Ni (CO)4] (4) [Pl (NH3)4]Cl2
Last Answer : (3) [Ni (CO)4]
Description : Methemoglobin refers to
Last Answer : Methemoglobin refers to A. A colourless respiratory pigment B. Oxidized haemoglobin C. Oxygenated haemoglobin D. Deoxygenated haemoglobin
Description : The α-ketoacid is decarboxylated by H2O2 forming a carboxylic acid with one carbon atom less in the absence of the enzyme: (A) Catalase (B) Decarboxylase (C) Deaminase (D) Phosphatase
Last Answer : Answer : A
Description : The oxidation state of nickel in `K_(4)Ni(CN)_(4)` is:
Last Answer : The oxidation state of nickel in `K_(4)Ni(CN)_(4)` is: A. `-1` B. `0` C. `+1` D. `+2`
Description : Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction oxidation state of iron .
Last Answer : Sulphide ion reacts with `[Fe(CN)_(5)NO]` to form a purple coloured compound (X). In this reaction ... . changes from +2 to +4 D. does not change.
Description : The oxidation number of nickel in K4[Ni(CN)4] is - (1) Zero (2) +4 (3) -4 (4) +8
Last Answer : (1) Zero Explanation: The oxidation number of nickel in K4[Ni(CN)4] is zero.
Description : What is the oxidation number of Nickel in K4[Ni(CN)4]?
Last Answer : Zero
Description : The oxidation number of nickel in K4 [Ni(CN)4 ] is (1) Zero (2) +4 (3) –4 (4) +8
Description : Which of the following statements is False/Incorrect about nitrobenzene? (a) is formed by nitration of benzene at temperatures below 60°C. (b) can be further nitrated to give m-dinitrobenzene. (c) can be oxidized with KMnO4 to give benzoic acid. (d) can be reduced with Sn/HCl to give aniline.
Last Answer : can be oxidized with KMnO4 to give benzoic acid
Description : Which conditions are fulfilled in case of combustion? (a) Oxygen is reduced (b) Burning compound undergoes oxidation (c) Oxygen is reducing agent (d) Both (a) and (b)
Last Answer : (d) Both (a) and (b)
Description : Sigmoidal oxygen dissociation curve is a property of (A) Haemoglobin (B) Carboxyhaemoglobin (C) Myoglobin (D) Methaemoglobin
Description : When haemoglobin takes up oxygen there is a change in the structure due to the moving closer together of (A) β-chains (B) β-chains (C) γ-chains (D) α and γ chains
Description : What is the oxidation state of iron in haemoglobin ?
Last Answer : What is the oxidation state of iron in haemoglobin ?
Description : Geometrical shapes of the complex formed by the reaction of `Ni^(2+)` with `Cl^(Θ),CN^(Θ)` and `H_(2)O` are :
Last Answer : Geometrical shapes of the complex formed by the reaction of `Ni^(2+)` with `Cl^(Θ) ... and octahedral D. octahedral, square planar and octahedral
Description : how many atoms does H2O2?
Last Answer : 42 hydrogen and 2 oxygen
Description : Is H2O2 ionic or convalint?
Last Answer : Need answer
Description : Stains of rust on clothes can be removed by – (1) Oxalic acid (2) Petrol (3) Alcohol (4) H2O2
Last Answer : (1) Oxalic acid Explanation: Rust stains can be a challenge to remove because the stain consists of tiny iron oxide particles. Acidic solutions work best for these stains. The important ingredient in these ... the iron and loosen it from the fabric, then hold it in suspension in the wash water.
Description : Chemical composition of heavy water is – (1) H2O2 (2) H2O (3) HDO (4) D2O
Last Answer : (4) D2O Explanation: The chemical composition of Heavy water (deuterium oxide) is 2H2O or D2O.
Description : In laboratory preparation of H2O2 from hydrated barium peroxide with sulphuric acid , anhydrous barium peroxide is not used Why ?
Last Answer : Ans-Because it forms a protective layer of barium sulphate over anhydrous barium peroxide
Description : Hydrogen peroxide (H2O2)-------? A. helps line up cell proteins B. is poisonous to tissues (Answer)
Last Answer : B. is poisonous to tissues (Answer)
Description : H2O2 is precursor of A A. free radicals B. Enzyme C. Both D. None of these
Last Answer : free radicals
Description : Oxidase enzymes responsible for producing H2O2 are present in a. Mitochondria b. Ribosomes c. Peroxisomes d. Polysomes
Last Answer : Peroxisomes
Description : Which of the following reagents will react with pyrrole to form 2- formylpyrrole? (a) HCOOH (b) CHCl3/KOH (c) H2O2 (d) (CH3CO)2O/SnCl4
Last Answer : CHCl3/KOH
Description : 12 years old child presents with symptoms of widespread gingivitis with bleeding and general malaise for several weeks. How would you manage this patient? M07 ********* A. Prescribe ... mouth wash. C. Give a prophylaxis with ultra sonic scaling D. Refer for haematological screening
Last Answer : D. Refer for haematological screening
Description : The best way to clean a cavity before the placement of GIC is,** A. H2O2 B. Phosphoric Acid C. Polyacrylic acid 10% sturdavent 563pag
Last Answer : C. Polyacrylic acid 10% sturdavent 563pag
Description : Pollutants released from paddy field is a) CO2 b) CO c) H2O2 d) CH4.
Last Answer : d) CH4.
Description : Stains of rust on clothes can be removed by : (1) Oxalic acid (2) Petrol (3) Alcohol (4) H2O2
Last Answer : Oxalic acid
Description : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase its oxidation number beyond `+6`.
Last Answer : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase ... False. D. If both Assertion & Reason are False.
Description : As a result of each oxidation a long chain fatty acid is cleaved to give (A) An acid with 3-carbon less and propionyl CoA (B) An acid with 2-carbon less and acetyl CoA (C) An acid with 2-carbon less and acetyl CoA (D) An acid with 4-carbon and butyryl CoA
Description : About 6.25 g of haemoglobin is produced and destroyed in the body each day and the total amount of haemoglobin in a normal healthy 70 kg weighing male adult is (A) 250 g (B) 150 g (C) 100 g (D) 70 g
Description : Vitamin E protects the polyunsaturated fatty acids from oxidation by molecular oxygen in the formation of (A) Superoxide (B) Peroxide (C) Trioxide (D) All of these
Description : Carbon monoxide has how much greater affinity for haemoglobin as compared to oxygen? -Do You Know?
Last Answer : answer:
Description : Assertion `:-` Low concentration of oxygen allow dissociation of oxyhaemoglobin. Reason `:-` CO has more affinity with Haemoglobin as compares to oxyg
Last Answer : Assertion `:-` Low concentration of oxygen allow dissociation of oxyhaemoglobin. Reason `:-` CO has more ... D. If both Assertion & Reason are false.
Description : Assertion `:-` Haemoglobin can not get saturated with oxygen more than `97%`. Reason `:-` With a rise in `PO_(2)`, the affinity between `O_(2)` & haem
Last Answer : Assertion `:-` Haemoglobin can not get saturated with oxygen more than `97%`. Reason `:-` With a ... False. D. If both Assertion & Reason are false.
Description : Given below graphs an oxygen dissociation curve `:-` Where in the body will haemoglobin be saturation at the percentage shown at points X,Y and Z.
Last Answer : Given below graphs an oxygen dissociation curve `:-` Where in the body will haemoglobin be ... ventricle , Y-Right ventricle, Z-Systemic artery
Description : The oxygen - haemoglobin dissociation curve will show a right shift in case of
Last Answer : The oxygen - haemoglobin dissociation curve will show a right shift in case of A. High `pCO_(2)` B. High ... `pCO_(2)` D. Less `H^(+)` concentration
Description : Binding of oxygen with haemoglobin is primarily related to `:`
Last Answer : Binding of oxygen with haemoglobin is primarily related to `:` A. Partial pressure of `O_(2)` B. ... ` C. `H^(+)` ion concentration D. Temperature
Description : The oxygen Haemoglobin dissociation curve will show a right shift in case of `:-`
Last Answer : The oxygen Haemoglobin dissociation curve will show a right shift in case of `:-` A. Less `H^(+)` concentration B. ... `CO_(2)` D. High 2,3, D.P.G.
Description : Carbon monoxide has greater affinity for haemoglobin as compared to oxygen :
Last Answer : Carbon monoxide has greater affinity for haemoglobin as compared to oxygen : A. 1000 Times B. 200 Times C. 20Times D. 2 Times