Description : Which element of group V A shows maximum oxidation states ?
Last Answer : Which element of group V A shows maximum oxidation states ? A. bismuth B. phosphorus C. nitrogen D. arsenic
Description : A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number? (1) C (2) S (3) H (4) Cl
Last Answer : Cl
Description : Which are the most abundant metal and third abundant element in the earth crust ?
Last Answer : Aluminium (Al) (7.28%)
Description : Which is an element which never exhibits positive oxidation state in any of its compounds? -Do You Know?
Last Answer : answer:
Description : If an element is in its lowest oxidation state, under proper conditions it can act as :
Last Answer : If an element is in its lowest oxidation state, under proper conditions it can act as : ... as reducing agent D. Neither oxidising nor reducing agent
Description : Positive oxidation state of an element indicates that it is -
Last Answer : Positive oxidation state of an element indicates that it is - A. Is in elementry form B. Oxidised C. Reduced D. Does not changed.
Description : In which of the following cases, the element is oxidised into its highest oxidation state when it reacted with ozone under moist condition.
Last Answer : In which of the following cases, the element is oxidised into its highest oxidation state when it reacted with ozone under ... S B. `I_(2)` C. P D. As
Description : What determine the most likely oxidation state of an element?
Last Answer : the number of electrons the element needs to lose or gain tohave a full valence shell
Description : Which is an element which never exhibits positive oxidation state in any of its compounds?
Last Answer : Fluorine
Description : During oxidation energy released in a series of slow stepwise reaction controlled by (A)____ and is trapped as (B)____ in the form of (C)____
Last Answer : During oxidation energy released in a series of slow stepwise reaction controlled by (A)____ and is trapped as (B)____ in the form of (C)____
Description : Lagoons used for purification of polluted water (A) Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds (B) Use micro-organisms/bacteria in presence of dissolved oxygen (C) Gives an ... 1 mg/litre and BOD = 3.8 mg/litre (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : What is the oxidation number of free element ?
Last Answer : The oxidation number of free element is 0 .
Description : An element `A` in a compound `ABD` has oxidation number `A^(n-)`. It is oxidised by `Cr_(2)O_(7)^(2-)` in acid medium. In the experiment `1.68xx10^(-3
Last Answer : An element `A` in a compound `ABD` has oxidation number `A^(n-)`. It is oxidised by `Cr_(2)O_(7)^(2-)` in acid ... is: A. 3 B. 3-n C. n-3 D. `+n`
Description : In the above chemical reaction which element does undergo oxidation and which does undergo reduction?
Last Answer : 2Na(s) + H2(g) \(\overset{\Delta}\longrightarrow\) 2NaH(s) In the above ... element does undergo oxidation and which does undergo reduction?
Description : Nichrome wire is used as a heating element I many appliances because (a) it can be drawn out into wires easily (b) it has high resistivity (c) it resists oxidation in air when red hot (d) both (b) and (c) are correct
Last Answer : Ans:(d)
Description : When water itself combines chemically with some element or mineral it is called – (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : (3) Hydration Explanation: When water combines chemically with other elements, the process is called hydration. In organic chemistry, a hydration reaction is a chemical reaction in which a hydroxyl ... runs in a strong acidic, aqueous solution. Hydration leaves the non-water component intact.
Description : Which element does not show variable oxidation states?
Last Answer : Zinc
Description : Which element of Boron Family is used to prevent oxidation?
Last Answer : Ans.Aluminum
Description : When water itself combines chemically with some element or mineral it is called (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : Hydration
Description : Define the Phenomenon catenation. Which element has maximum Catenation ability ?
Last Answer : Carbon has maximum catenation ability. The self-linkage of the atoms of elements to produce long chains is called catenation.
Description : STATEMENT-1: The oxidation state of S in `H_(2)S_(2)O_(8)` is 6. STATEMENT-2: Maximum oxidation state of A is 6 because the maximum oxidation state of
Last Answer : STATEMENT-1: The oxidation state of S in `H_(2)S_(2)O_(8)` is 6. STATEMENT-2: Maximum ... D. Statement-I is not correct and Statement-II is correct
Description : Compared to the resting state, vigorously contracting muscle shows (A) An increased conversion of pyruvate to lactate (B) Decreased oxidation of pyruvate of CO2 and water (C) A decreased NADH/NAD+ ratio (D) Decreased concentration of AMP CARBOHYDRATES AND CARBOHYDRATE METABOLISM 21
Last Answer : A
Description : In which oxidation state chromium exhibit different color ?
Last Answer : Chromium is Blue in +2 states, Green in +3 states and Yellow in +6 state.
Description : What is the formula of Hypo in Oxidation state of sulphur ?
Last Answer : The formula of Sodium Thio Sulphate is Na2S2O3. H2O is called as hypo Oxidation state of Sulphur in it is +6 0r -2
Description : What does Sherlock say is the meaning of 'to 86' someone in 'The Female of the Species' episode in the third season of the TV series 'Elementary'?
Last Answer : It is slang, to get rid of something, to eject someone or torefuse a service
Description : Write the molecular formulae of the third and fifth member of homologous series of carbon compounds represented by the general formula C n H 2n+2
Last Answer : Third member n = 3, C 3 H 2x3+2 = C 3 H 8 Fifth member n = 5, C 5 H 2x5+2 = C 5 H 12
Description : N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions. (A) First (B) Second (C) Third (D) Any
Last Answer : (D) Any
Description : Which of the following statements about India's performance in Test Cricket are correct in light of recent developments? I. The victory against Sri Lanka in third test of the 2009 series at Brabourne Stadium in Mumbai was India's ... II only c. II and III only d. III and I only e. I, II and III
Last Answer : c. II and III only
Description : The elements of the third period of the Periodic Table are given below: periodic-classification-of-elements-chapter-wise-important-questions-class-10-science-1 (a) Which atom is bigger, Na or Mg? Why? (6) Identify the most (i) metallic and (ii) non-metallic element in Period 3. -Science
Last Answer : (a) Sodium is bigger than magnesium as it has lesser nuclear charge so there is less force of attraction between nucleus and valence electrons and less effective nuclear charge. It is, therefore, ... the most non-metallic element because it can gain electrons easily due to its smallest atomic size.
Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is a silver-white metal, with bluish tinge, capable of taking a high polish. T element ... crust and used to make drink cans. The atomic number of this element is 13. Name t element.
Last Answer : ANSWER: ALUMINUM
Description : What are the minimum and maximum Oxidation Number of Cl in its compounds?
Last Answer : Ans. Minimum -0, maximum- +7.
Description : Which of the following sources is responsible for maximum air pollution? (A) Industrial chimney exhaust (B) Forest fire (C) Automobiles exhaust (D) Photochemical oxidation of organic matter
Last Answer : (C) Automobiles exhaust
Description : The daily total body water derived from oxidation of food stuffs is about (A) 100 ml (B) 300 ml (C) 600 ml (D) 1000 ml
Last Answer : Answer : B
Description : Each gm of protein on complete oxidation yields (A) 0.21 gm water (B) 0.31 gm water (C) 0.41 gm water (D) 0.51 gm water
Last Answer : Answer : C
Description : The oxidation of 100 gm of fat yields (A) 50 gm water (B) 107 gm water (C) 150 gm water (D) 200 gm water
Description : Water derived in gm from complete oxidation of each gm of carbohydrate is about (A) 0.15 (B) 0.25 (C) 0.35 (D) 0.55
Last Answer : Answer : D
Description : In most mammals, except primates, uric acid is metabolized by (A) Oxidation to allantoin (B) Reduction to NH3 (C) Hydrolysis to allantoin (D) Hydrolysis to NH3
Last Answer : Answer : A
Description : In mammals other than higher primates uric acid is converted by (A) Oxidation to allantoin (B) Reduction to ammonia (C) Hydrolysis to ammonia (D) Hydrolysis to allantoin
Description : Epinephrine is derived from norepinephrine by (A) Decarboxylation (B) Hydroxylation (C) Oxidation (D) N-methylation
Description : One gram of protein on complete oxidation in the body yields about (A) 2 Kcal (B) 4 Kcal (C) 8 Kcal (D) 12 Kcal
Description : One gram of fat on complete oxidation in the body yields about (A) 4 Kcal (B) 6 Kcal (C) 9 Kcal (D) 12 Kcal
Description : One gram of carbohydrate on complete oxidation in the body yields about (A) 1 Kcal (B) 4 Kcal (C) 6 Kcal (D) 9 Kcal
Description : The coupling of oxidation and phosphorylation in intact mitochondria: (A) Puromycin (B) Oligomycin (C) Streptomycin (D) Gentamycin
Description : The number of ATP produced in the oxidation of 1 molecule of NADPH in oxidative phosphorylation is (A) Zero (B) 2 (C) 3 (D) 4
Description : The oxidation-reduction system having the highest redox potential is (A) Ubiquinone ox/red (B) Fe3+ cytochrome a/Fe2+ (C) Fe3+ cytochrome b/Fe2+ (D) NAD+/NADH
Description : Malic enzyme convers malic acid, in the presence of NADP+ to Pyruvic acid. This reaction is a/an (A) Decarboxylation (B) Decarboxylation and Dehydrogenation (C) Dehydrogenation (D) Oxidation
Description : β-oxidation of fatty acids is inhibited by (A) NADPH (B) Acetyl CoA (C) Malonyl CoA (D) None of these