Carbon and its compounds Worksheet-8

Carbon and its compounds Worksheet-8

 

Multiple-Choice Questions: (With One Option Correct)

  1. Saturated hydrocarbons generally burn in air with a blue, non sooty flame because:

(A) The percentage of carbon is comparatively low

(B) The  percentage of carbon is comparatively high

(C) Equal percentage of carbon and hydrogen is present

(D) None of these

  1. What are the products of given reaction?

(A)                           (B)

(C)                         (D) All of these

 

  1. Ethanol is used as additive in petrol because:

(A) Its cost is less

(B) On combustion, ethanol produces energy equal to the energy produced by petrol

(C) It burns with a clear flame giving lot of heat

(D) All of these

 

Matrix Matching:

  1. Match the Column:

 

  1. Match the Column:

 

Word Bank:

  1. The given formulae CnH2nO, CnH2nO2, C3H8O are of ____a_____, ____b____, _____c_____.

(A) Aldehyde or ketone         (B) Acid                          (C) Alcohol

 

  1. The IUPAC names of C3H7OH, C9H19OH and CH3OH are ____a_____, _____B_____, _____C_____.

(A) Propanol                           (B) Nonanol                  (C) Methanol

 

Answer key

  1.  (A)
  2. (A)
  3. (B)
  4. 1-B; 2-D; 3-A; 4-C
  5. 1-B; 2-C; 3-D; 4-A
  6. :::
  7. :::