For the Assertion (A) and Reason (R) below, choose the correct alternative from the following. 

• Assertion (A): In the ordinary fire extinguisher, carbon dioxide is generated by the chemical reaction of sodium bicarbonate and diluted sulphuric acid. 
• Reason (R): Carbon dioxide can be used to extinguish fire. 

For the Assertion (A) and Reason (R) below, choose the correct alternative from the following. 

Assertion (A): All machines suffer a loss of efficiency due to the frictional force acting. 
Reason (R): The frictional force can be reduced by providing a thin film of lubricant between any two mating parts. 

For the Assertion(A) and Reason(R) below, choose the correct alternative from the following. 

Assertion(A): The escape velocity from the surface of the moon is less than that from the Earth's surface. 
Reason(R): The moon has no atmosphere. 

Choose the correct alternative from the following options for the Assertion (A) and Reason (R) given below.

• Assertion (A): Red-green colour blindness occurs with more frequency in males than in females.
• Reason (R): Females have two chromosomes and males have one.

Choose the correct alternative from the following options for the Assertion(A) and Reason(R) given below.

Assertion (A): The western coast of India is characterised by the location of several sea ports.

Reason (R): Western coast has evidence of deep sea water.

 

Choose the correct alternative from the following options for the Assertion(A) and Reason(R) given below.

Assertion(A): Interpersonal roles relate to a person's behaviour that focuses on interpersonal contact.

Reason(R): Such roles are derived directly from the authority and status.

Choose the correct alternative from the following options for the Assertion (A) and Reason (R) given below.

As per a recent survey, 85% of the work force today is either actively looking for a job or open to talking to recruiters and relevant opportunities; the ones who are satisfied with their job are few in number.

Which of the following may be a reason for the above mentioned results of the survey?

• Travellers should generally be careful about booking a hotel at the time when a big convention is in town. 

Which of the following is the most plausible reason for exercising this caution?

• It took soaring rhetoric of US ex-president Barack Obama in his eulogy to Mandela to finally bury the embarrassing legacy of American policy towards the South African leader during his lifetime. It has taken a black president of the US to make amends for treating Mandela as an enemy, long after the Cold War had ended.

Which of the following can be the best reason for the assertion made in the above statement?