CBSE Class 10 English Grammar | Editing Exercises
The following passage has not been edited. There is an error in each line. Identify the error, correct it and write your answers in the respective blank spaces. Underline the correct answer. The first one has been done for you.
| Error | Correction | |
| When atoms have split into smaller ones, they release a great (a) | have | are |
| deal of energy. The process is called nuclear fission. Making (b) | ||
| power scientists induces nuclear fission in huge plants called (c) | ||
| nuclear reactors. A typical nuclear reactors uses U-235 to make (d) | ||
| power. U-235 atoms are first bombarded by a lowly energy neutron. (e) | ||
| This causes the U-235 atom to split and releasing high energy neutrons (f) | ||
| and heat. The high energy neutrons are converting into low (g) | ||
| energy neutrons by a controlled process. They than go on to (h) | ||
| bombard other U-235 atoms and triggers a chain reaction. (i) |
Answers
a) Error – have / correction – are (We need a passive verb form here; scientists split atoms. That means atoms are split.)
b) Error – making / correction – to make
c) Error – induces / correction – induce (The subject is the plural noun scientists.)
d) Error – reactors / correction – reactor (Use a singular noun with the article a.)
e) Error – lowly / correction – low (Lowly is an adverb; we need the adjective low to modify the noun energy.)
f) Error – releasing / correction – release
g) Error – converting / correction – converted (A controlled process converts high energy neutrons to low energy neutrons / That means high energy neutrons are converted into low energy neutrons.)
h) Error – than / correction – then
i) Error – triggers / correction – trigger (The subject is the plural pronoun they; they trigger a chain reaction.)
