India’s first indigenously built submarine was

Who is author of the book- Hop On: My Adventures on Boats, Trains and Planes?

Directions: Each question given below consists of a statement, followed by two arguments numbered I and II. You have to decide which of the arguments is a 'strong' argument and which is a 'weak' argument.

Give answer 
( a ) if only argument I is strong.
( b ) if only argument II is strong.
( c ) if either I or II is strong.
( d ) if neither I nor II is strong.
( e ) if both argument I and II are strong.

Statement: 
Should fashionable dresses be banned?
Arguments: 
I. Yes, fashions keep changing and hence consumption of cloth increases.
II. No, fashionable clothes are a person's self-expression and therefore his / her fundamental right. 

Basic scientific principle behind a nuclear reactor is

Direction: Use the verbs given in brackets either in Active or Passive according to sense of the given sentence.
She always……work in time. (do)

Home Ministry and actor has recently provided security of Y category to which MP and actor?

The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in each class, the ratio changes to 4 : 5 : 7 . originally the total number of students was: 

When was the international system of units implemented?