The pair of compounds that can exist together is
Options
(a) FeCl₃,SnCl₂ (b) HgCl₂,SnCl₂ (c) FeCl₂,SnCl₂ (d) FeCl₃,KI
Correct Answer:
FeCl₂,SnCl₂
Explanation:
No explanation available. Be the first to write the explanation for […]
In acidic medium, H₂O₂ changes Cr₂O₇²⁻ to CrO₅ which has two ( -O – O -) bonds. Oxidation state of Cr in CrO₅ is
Options
(a) 5 (b) 3 (c) 6 (d) -10
Identify Z in the sequence of reaction : HBr/H₂O₂ C₂H₅ONa CH₃CH₂CH = CH₂ → Y → Z
Options
(a) CH₃ – (CH₂)₃ – O – CH₂CH₃ (b) (CH₂)₃CH – O – CH₂CH₃ (c) […]
(I) H₂O₂ + O₃ → H₂O + 2O₂ (II) H₂O₂ + Ag₂O → 2Ag + H₂O + O₂ Role of hydrogen peroxide in the above reactions is respectively
Options
(a) Oxidizing in (I) […]
The oxidation states of sulphur in the anions : SO₃²⁻,S₂O₄²⁻ and S₂O₆²⁻ follow the order
Options
(a) S₂O₄²⁻ < SO₃²⁻ < S₂O₆²⁻ (b) SO₃²⁻ < S₂O₄²⁻ < S₂O₆²⁻ (c) S₂O₄²⁻ < S₂O₆²⁻ < […]
The oxidation numbers of hydrogen in KH,MgH₂ and NaH are respectively
Options
(a) 2,1 and -2 (b) 1,1 and 1 (c) -1, -1 and -1 (d) -2 , -3 and -1
Correct Answer: […]
Which of the following is a redox reaction
Options
(a) Evaporation of H₂O (b) Both oxidation and reduction (c) H₂SO₄ with NaOH (d) In atmosphere O₃ from O₂ by lighting
Correct Answer:
Both […]
In the reaction : 2P₂O₅ + 2HNO₃ → P₄O₁₀ + x, the term x is
Options
(a) N₂O₄ (b) H₂O only (c) N₂O₅ (d) PNO₃
Correct Answer:
N₂O₅
Explanation:
No explanation available. Be […]
The oxide,which can not act as a reducing agent, is
Options
(a) CO₂ (b) ClO₂ (c) NO₂ (d) SO₂
Correct Answer:
CO₂
Explanation:
No explanation available. Be the first to write the explanation […]
If an atom is reduced, its oxidation number
Options
(a) does not change (b) increases (c) sharply decreases (d) slightly decreases
Correct Answer:
sharply decreases
Explanation:
No explanation available. Be the first to […]
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