• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v):

 

Balanced chemical equation has an equal number of atoms of different elements in the reactants and products. According to law of conservation of mass, matter can neither be created nor be destroyed in a chemical reaction.

 

(v) After rain, Shreya observed that an iron lock developed a reddish-brown powdery covering after rain. She cleaned it with sandpaper and found a shiny layer beneath. What could she do to prevent such corrosion from occurring again
1 To buy a new similar lock  
2 To coat the surface with a layer of paint  
3 To clean the lock using sandpaper regularly  
4 To buy a gold lock instead of an iron lock  

Ans.

(2)

To coat the surface with a layer of paint