Sail E0 Webinar

MCQs

Total Questions : 217 | Page 16 of 22 pages
Question 151. The loss of oxygen from an element is simple
  1.    oxidation
  2.    reduction
  3.    Redox
  4.    hydrolysis
 Discuss Question
Answer: Option B. -> reduction
Answer: (b).reduction
Question 152. When iron reacts with oxygen in the presence of water it produces
  1.    oil
  2.    gas
  3.    rust
  4.    acid
 Discuss Question
Answer: Option C. -> rust
Answer: (c).rust
Question 153. The fuel in space shuttle's rocket burns due to the occurrence of
  1.    oxidation reaction
  2.    reduction reaction
  3.    re-dox reaction
  4.    catalysis
 Discuss Question
Answer: Option C. -> re-dox reaction
Answer: (c).re-dox reaction
Question 154. The reaction in which oxidation and reduction takes place at same time is called as
  1.    Redox-reaction
  2.    oxidation reaction
  3.    reduction reaction
  4.    none of above
 Discuss Question
Answer: Option A. -> Redox-reaction
Answer: (a).Redox-reaction
Question 155. Gain of oxygen (O⁻²) by an element is termed as
  1.    reduction
  2.    oxidation
  3.    catalysis
  4.    hydrolysis
 Discuss Question
Answer: Option B. -> oxidation
Answer: (b).oxidation
Question 156. Reaction of Lead Oxide (PbO) and Hydrogen Gas (H₂) leads to
  1.    reduction of Lead
  2.    oxidation of Lead
  3.    formation of PbCl₂
  4.    formation of PbO
 Discuss Question
Answer: Option B. -> oxidation of Lead
Answer: (b).oxidation of Lead
Question 157. After accepting electrons, Manganate Mn(VII) ion becomes oxidized to
  1.    Mn (VI) ions
  2.    Mn (V)
  3.    Mn(III) ions
  4.    Mn(II) ions
 Discuss Question
Answer: Option D. -> Mn(II) ions
Answer: (d).Mn(II) ions
Question 158. In electrolysis of copper purification, at cathode
  1.    pure copper gets deposited
  2.    the object to be electroplated is kept
  3.    impure copper gets deposited
  4.    CuSO₄ gets deposited
 Discuss Question
Answer: Option A. -> pure copper gets deposited
Answer: (a).pure copper gets deposited
Question 159. Displacement reaction occurs when
  1.    a more reactive non-metal displaces less reactive non-metals
  2.    a more reactive metal displaces a less reactive metal
  3.    metal lower in reactivity series is added
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 160. A reductant
  1.    removes oxygen
  2.    donates electrons
  3.    both a and b
  4.    is the oxidising agent
 Discuss Question
Answer: Option C. -> both a and b
Answer: (c).both a and b

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

GPOE / GPA Combined 1 Free Mock Test SAIL JO E-0 2024
ICA Combined 1 Free Revision Test SAIL JO E-0
RDIC Review Test SAIL JO E-0
Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
RSP Combined 1 Free Revision Test SAIL JO E-0