Questions

If some action has started in the past and is still continuing, then present perfect continuous tense should be used instead of present continuous tense. So, the phrase ‘is working’ needs to be replaced with ‘has been working’ to make the sentence contextually correct. Thus, the correct formation would be, ‘Ramesh has been working in this factory for the past three months’.

Since, the starting statement carries a subject; R will be the first statement. The next statement describes why are they hunted, so Q follows P, as it states that what is being done with the horns. S would be the concluding statement and thus form a coherent paragraph.

The correct formation would be, ‘The Rhinoceros is hunted by poachers for its horn which is sold at high prices.’

'No sooner' is always followed by ‘Than’ and the verb comes before the subject. Thus, the sentence is grammatically and contextually correct. Thus, the correct formation would be, ‘No sooner had he completed his first novel than he fell seriously ill’.

The main function of input devices is to direct commands and data into computers. Computers then use their CPU to process this data and produce output.

Examples of input devices - keyboards, mouse, barcode readers, Magnetic Ink Character Readers (MICR), Optical Character Readers (OCR), touch screens, etc...

The   Attorney   General   is   responsible   for   giving advice to the Government of India upon such legal matters  and  to  perform  such  other  duties  of  legal character as may be referred or assigned to him by the President. The  Attorney  General  has  the  right  of  audience  in all Courts in India as well as the right to participate in the proceedings of the Parliament, though not to vote.

The   Attorney   General   appears   on   behalf   of Government  of  India  in  all  cases  (including  suits, appeals  and  other  proceedings) in  the  Supreme Court in which Government of India is concerned.

He also represents the Government of India in any reference  made  by  the  President  to  the  Supreme Court under Article 143 of the Constitution.

The  Attorney  General  for  India  is  appointed  by  the President   of   India   under   Article   76(1)   of   the Constitution  of  India  and  holds  office  during  the pleasure  of  the  President.  He  must  be  a  person qualified  to  be appointed  as  a  Judge  of  the Supreme Court. So, statement 4 is incorrect.

Modal ‘can’ needs to be replaced with ‘could’ to make the sentence grammatically correct.‘Could’ is used to express power and possibility in past tense. Thus, the correct formation would be, ‘I wish I could help you’.