One of four words is a class to which the other three belong. Identify the class.
View Answer Report Error Discuss
Which one of the following is the largest source of natural energy to humans?
What is meant by space tourism?
Which of the following is not a voluntary action?
Chinese spacecraft Chang’e 5 has returned to the Earth, carrying samples from which astronomical body?
The planet Mars is also known as the ____.
Which of the following technique is used to know the age of a tree in years?
In 1969, who among the following was a part of the crew of spaceflight Apollo-XI?