Description : 45. When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from (1) Zero to + 1 and zero to –3 (2) Zero to +1 and zero to –5 (3) Zero to –1 and zero to + 5 (4) Zero –1 and zero to + 3
Last Answer : Zero to –1 and zero to + 5
Description : Assertion :- In `HClO_(4)`, Chlorine has the oxidation number of `+4`. Reason :- `HClO_(4)` (perchloric) acid has two peroxide linkage.
Last Answer : Assertion :- In `HClO_(4)`, Chlorine has the oxidation number of `+4`. Reason :- `HClO_(4)` ( ... is False. D. If both Assertion & Reason are False.
Description : Oxidation number of chlorine in perchloric acid is :-
Last Answer : Oxidation number of chlorine in perchloric acid is :- A. `+1` B. `+3` C. `+5` D. `+7`
Description : The oxidation number of chlorine in KClO4 is: w) -1 x) +3 y) +7 z) +1
Last Answer : ANSWER: C -- +7
Description : Two oxidation states for chlorine are found in the compound :
Last Answer : Two oxidation states for chlorine are found in the compound : A. `CaOCl_(2)` B. `KCl` C. `KClO_(3)` D. `Cl_(2)O_(7)`
Description : What is the most likely oxidation state of Cl (chlorine)?
Last Answer : In one's initial studies of chemistry it is -1. However, don't forget that in chlorine itself the O.S. is zero.
Description : Bleaching action of chlorine is by - (1) Decomposition (2) hydrolysis (3) reduction (4) oxidation
Last Answer : (4) oxidation Explanation: Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action. Chlorine reacts with water to form hydrochloric and hypochlorous acids.
Description : Bleaching action of chlorine is by - (1) decomposition (2) hydrolysis (3) reduction (4) oxidation
Description : Select the compound in which chlorine shows oxidation state + 7?
Last Answer : HClO4
Description : The reaction between methane and chlorine in diffused sunlight is-----? A. Oxidation B. Reduction C. Polymerisation D. Radical substitution (Answer)
Last Answer : D. Radical substitution (Answer)
Description : Bleaching action of chlorine is by----? A. Oxidation (Answer) B. Reduction C. Decomposition D. Hydrolysis
Last Answer : A. Oxidation (Answer)
Description : Which of the following statement(s) is (are) true for the given situation? Exposure of silver chloride to sunlight for a long duration turns grey due to (i) formation of silver by decomposition of silver chloride (ii) sublimation of ... (b) (ii), (i) and (iii) (c) (ii) and (iii) (d) (iv) only
Last Answer : (a) (i) only
Description : Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction? (A) Oxidation of Na + ions (B) Oxidation of Cl - ions (C) Reduction of Na + ions (D) Reduction of Cl - ions
Last Answer : (B) Oxidation of Cl - ions
Description : Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid
Last Answer : ANSWER: Z -- REACTION OF POTASSIUM HYDROXIDE WITH NITRIC ACID
Description : What is the substance that reacts with hydrochloric acid to produce chlorine gas?
Last Answer : This compound is the manganese dioxide, MnO2.
Description : The substance that is added to make natural rubber strong and more bouncy is – (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Last Answer : (3) Sulphur Explanation: Vulcanization is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulfur or other equivalent "curatives ... individual polymer chains. Vulcanized materials are less sticky and have superior mechanical properties.
Description : The poisonous substance produced when the chlorine is exposed?
Last Answer : Phosgene
Description : The most commonly used substance to speed up the sedimentation of sewage is (A) Lime (B) Sulphuric acid (C) Chlorine (D) Sodium bisulphite
Last Answer : (A) Lime
Description : The substance that is added to make natural rubber strong and more bouncy is (1) Polythene (2) Sponge (3) Sulphur (4) Chlorine
Last Answer : Sulphur
Description : What is aluminum bromide plus chlorine yields aluminum chloride and bromine?
Last Answer : The chemical equation is:2 AlBr3 + 3 Cl2 = 2 AlCl3 + 3 Br2
Description : What is the balanced equation of magnesium plus chlorine equals Magnesium chloride?
Last Answer : The reaction is:Mg + Cl2 = MgCl2
Description : Are chlorine resistant plus size swimwear expensive?
Last Answer : Chlorine resistant plus size swimwear is expensive and is along a 50.00 dollar to 60.00 dollar range.
Description : Toluene reacts with chlorine in the presence of AlCl3 to give (a) o-Chlorotoluene (b) o- plus p-Chlorotoluene (c) m-Chlorotoluene (d) o- plus m-Chlorotoluene
Last Answer : o- plus p-Chlorotoluene
Description : In substance `Mg(HXO_(3))`, the oxidation number of X is :-
Last Answer : In substance `Mg(HXO_(3))`, the oxidation number of X is :-
Description : What is the oxidation number for Ca2 plus?
Last Answer : The oxidation number of the ion Ca2+ is +2.
Description : A substance which participates readily in both acid-base and oxidation-reduction reactions is:
Last Answer : A substance which participates readily in both acid-base and oxidation-reduction reactions is: A. `Na_(2) CO_(3)` B ... KMnO_(4)` D. `H_(2)C_(2)O_(4)`
Description : Oxidation of which substance in the body yields the most calories (A) Glucose (B) Glycogen (C) Protein (D) Lipids
Last Answer : D
Description : A radioactive substance does not undergo any change (in mass or charge) during – (1) ganuna-emission (2) oxidation (3) alpha-emission (4) beta-emission
Last Answer : (1) ganuna-emission Explanation: Gamma-rays do not carry any charge. These rays do not have any mass and hence can not be considered to be made up of particles.
Last Answer : (D) Lipids
Description : A radioactive substance does not undergo any change (in mass or charge) during (1) gamma-emission (2) oxidation (3) alpha-emission (4) beta-emission
Last Answer : gamma-emission
Description : In the reaction mgs plus 2h2oi mgoh2s plus h2g what is the oxidation state of each h in h2g?
Last Answer : What is the answer ?
Description : What is the oxidation half reaction for mgs plus zncl2aq mgcl2aq plus zns?
Description : Why aluminum most often has an oxidation state of plus 3?
Last Answer : Aluminium has three valence electrons.
Description : What Is the soupy substance formed in the stomach (food plus stomach juicesacids)?
Last Answer : Feel Free to Answer