Step 1: Context of the Non Co-operation Movement
- The Non Co-operation Movement was started by Mahatma Gandhi in 1920 against British rule.
- It aimed at boycotting foreign goods, schools, colleges, courts, and other institutions to weaken British authority.
Step 2: Events before suspension
- The Jallianwala Bagh massacre (1919) and the Rowlatt Act (1919) were important causes for launching the movement, not for suspending it.
- The Khilafat Movement was merged with it to unite Hindus and Muslims.
Step 3: Immediate cause of suspension
- On 5th February 1922, at Chauri-Chaura in Uttar Pradesh, a violent incident took place where a mob set fire to a police station, leading to the death of 22 policemen.
- Gandhi, being strictly against violence, immediately called off the movement on 12th February 1922.
Step 4: Conclusion
The first and main cause of suspension of the Non Co-operation Movement was the Chauri-Chaura incident.
The correct answer is option (D).
The value of $\dfrac{1+\cot^2 \theta}{1+\tan^2 \theta}$ will be: