Questions

False. MS-Word is not an Operating system.

Microsoft Word or MS-Word is an Application software developed by the company Microsoft. It allows users to Type and Save documents.

A method for providing fault tolerance by using multiple hard disk drives

The size of the pupil of the automatically adjusts itself according to the intensity of light passing through it; if the intensity is more, the size is less, if less, it is more. So in our case the pupil should dilate i.e , increase in size to be able to see in the dark. This switchover takes some time. But here the entry into the dark room is immediate. So the eye has no time to adjust itself and hence is not able to see at all for a while. 

Carbon is found in all organic compounds.

The nucleotides that are present in DNA molecule are 4. They are Thymine (T), Guanine (G), Adenine (A) and Cytosine (C).

Here in this Adenine pairs with Thymine (A - T) and Cytosine pairs with Guanine (C - G).

The given letter equation 3 BM (SHTR) imples that 3 Blind Mice (See How They Run).

The USSR( now a Common Wealth of Independent States) is spread over Europe and Asia