Practice Test


Q1) _____is well known for definitions of acids and bases Show Answer


Q2) The metallic elements are extracted from their ores by Show Answer


Q3) Oxidation is a process which involves Show Answer


Q4) Reduction is a process which involves Show Answer


Q5) An oxidizing agent is a substance which can Show Answer


Q6) Reducing agent is a substance which can Show Answer


Q7) Which of the following involves the redox reaction? Show Answer


Q8) The oxidation number of Mn is +7 in Show Answer


Q9) In which of the following reactions, hydrogen acts as an oxidising agent? Show Answer


Q10) The violent reaction between sodium and water is an example of Show Answer


Q11) Most common oxidation number of an element is -1. The number of electrons in its outermost shell is Show Answer


Q12) The conversion of PbS to Pb is Show Answer


Q13) The burning of methane in air by oxidation is example of Show Answer


Q14) Bleaching is Show Answer


Q15) Sulphide minerals are converted to oxides by Show Answer


Q16) Hydrogen can have oxidation number/s of Show Answer


Q17) In which one of the following compounds the oxidation number of oxygen is positive? Show Answer


Q18) Which of the following acts as an oxidizing agent? Show Answer


Q19) Which of the following acts both as an oxidising as well as reducing agent? Show Answer


Q20) The compound that can work both as an oxidising as well as a reducing agent is Show Answer


Q21) In which of the compounds does manganese exhibit highest oxidation number? Show Answer


Q22) In which of the following compounds, the oxidation number of iodine is fractional? Show Answer


Q23) In which of the following compounds, nitrogen has an oxidation state of -1? Show Answer


Q24) Among the following, identify the species with an atom in + 6 oxidation state Show Answer


Q25) In which compound chlorine has highest oxidation number? Show Answer


Q26) Nitrogen has oxidation number Show Answer


Q27) In which of the following compounds, transition metal is in zero oxidation state? Show Answer


Q28) Carbon is in the lowest oxidation state in which of the given compound? Show Answer


Q29) In which of the following compounds the oxidation number of carbon is zero? Show Answer


Q30) Which reaction involves neither oxidation nor reduction? Show Answer


Q31) A redox reaction is Show Answer


Q32) In which of the following reactions, the underlined substance has been oxidized? Show Answer


Q33) Which of the following represents a redox reaction? Show Answer


Q34) Which of the following is NOT a redox reaction? Show Answer


Q35) Which of the following is NOT a redox reaction? Show Answer


Q36) Nitric oxide acts as a reducing agent in the reaction Show Answer


Q37) The compound that can work both as an oxidizing as well as a reducing agent is Show Answer


Q38) Which of the following involves transfer of five electrons? Show Answer


Q39) Which of the following behaves as both oxidizing and reducing agent? Show Answer


Q40) which of the following is a redox reaction? Show Answer


Q41) Of the following reactions, only one is a redox reaction. Identify it Show Answer


Q42) The reaction in which hydrogen peroxide acts as a reducing agent is Show Answer


Q43) Which of the following is a redox reaction? Show Answer


Q44) In which one of the following reactions, nitrogen is NOT reduced? Show Answer


Q45) In which equation, there is no change in valency? Show Answer


Q46) Which of the following equation is a balanced equation? Show Answer


Q47) To remove stains from clothes ______ is used. Show Answer


Q48) Corroded iron is Show Answer


Q49) In which of the following oxidation number of chlorine is + 5. Show Answer


Q50) In which of the following compounds, iron has the lowest oxidation number? Show Answer


Q51) Which of the following acts as a reducing agent? Show Answer


Q52) In which of the following reactions, the underlined substance has been reduced? Show Answer


Q53) The oxide which cannot act as a reducing agent is Show Answer