Questions

Iron and manganese present as pollutants in water cannot be removed by_____

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Books are our ______ friends. They are our guides. We can learn everything from them. The books contain all the great ______ of the world's leaders and we can learn them by reading the books. The books help us find ______ to our questions. The books never fail us. We should read as ______ books as we can. But all books are not good. So we should ______ only good books.

the great ______ of our world.

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: Modern medicine has scored significant victories against both, and the major causes of ill health and death are now the chronic degenerative diseases, such as
coronary artery disease, arthritis, osteoporosis, Alzheimer's, macular degeneration, cataract and cancer.
Q: It follows that the majority of apparently healthy people are pre-ill.
R: Throughout human history the leading causes of death have been infection and trauma.
S: These have a long latency period before symptoms appear and a diagnosis is made.

In mammals, an important role of excretion is played by________

Which     of     the     following     statements regarding   Indian   federal   system   is/are correct?

1.All States have equal representation in the Rajya Sabha.

2.Consent  of  a  State  is  not  required  for altering its boundaries.

3.There is no dual citizenship in India.

Select  the  correct  answer  using  the  code given below.

Propagation of sound can be visualised as propagation of _____________ variations in the medium.

An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed?

The ionosphere overlaps which two layers of the atmosphere?