Questions created by CREST students. Answer them and earn Practice Points!
Showing: Class 7 (3 questions)
An iron ball at 49�C is dropped in a beaker containing water at 409.19 K. Identify the correct statement regarding the heat flow.
Read the passage and answer the question: In the past, India was known for her fine textiles, muslins and brocades of silver and gold. The ancient Indian iron and steel industry was equally famous. The famous Damascus steel for swords and armours used in crusades came from India. Thus in countless industries and crafts, the Indian craftsmen, builders, workers and artists created and prospered. Later, political disintegration and foreign conquest closed the long golden chapter of India's advancement and creative achievement. Which of the following is opposite in meaning to the word "advancement" occurring in the passage?
The square of an integer is called a perfect square number. If (x) is the perfect square of an integer, then what is the perfect square of its next integer?