Student Questions

Consider the following statements and choose the correct option: (1) The mass of 15 moles of H? is 30 g. (2) The number of moles present in 128 g of O? is 4.

Which of the following options, when unscrambled, gives the names of the homes of a bird and a dog?

Read the conversation and choose the correct modes of communication X and Y. Alex: My uncle sent a wedding invitation by X so that it reaches me on time. Ben: I received Y from the bank today and sent my documents through Y again.

In research, it is proved that in old age one should take more quantity of proteins in the diet than any other group of food. Which of the following justifies this?

Read the following statements: (1) The muscles of the heart are voluntary muscles. (2) The ear lobes and lips do not have bones. (3) The spinal cord along with the brain forms the main part of the nervous system. (4) The elbow and knee have ball and socket joint. Which of the above statements is/are incorrect?

Consider the following statements: (1) The formation of dew is a physical change. (2) The explosion of bombs is an endothermic process. (3) Dissolution of common salt can be reversed by heating. Which of the above statements is/are correct?

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.

A sharp knife enables us to cut through things more easily because __________________.

Fill in the blank using an appropriate word: I have ________ pair of shoes.

Fill in the blank using the correct punctuation mark: Are you feeling well today ___

Identify the possessive pronoun in the sentence: Which shirt is yours?

Fill in the blank with an appropriate preposition: The crane tipped ____ from the hill.

Which two words in the following sentence are conjunctions? I was taught that neither the way of progress was swift nor easy.

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?

Choose the most suitable adjective: The food at this supermarket is always _________.

Shyam had Rs. 1000. He gave Rs. 200 to his best friend Ram. Later, Shyam spent Rs. 20 on samosas. How much money is Shyam left with?

Gauri purchased 1 kg vegetables out of which 1/2 kg were onions and 250 g were tomatoes. If the remaining were potatoes, then what was the weight of potatoes?

Write the following integers from the greatest to the least: 36, -39, -15, 16, and 19.

A big string was cut into two smaller strings. The first string is 10 m long and the length of the second string is twice that of the first one. Find the total length of the original string.

The marks obtained by 15 students in a class test are: 0, 5, 4, 8, 9, 7, 5, 7, 8, 7, 5, 2, 2, 6 and 10. Find the average score obtained by the students.