UPSC Prelims 2013 Science & Technology

Many transplanted seedlings do not grow because -

Mycorrhizal Biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to - 1. Resist drought and increase absorptive...

Consider the following phenomena: 1. Size of the sun at dusk 2. Colour of the sun at dawn 3. Moon being visible at dawn 4. The twinkle of stars in the sky 5....

Consider the following minerals - 1. Calcium 2. Iron 3. Sodium Which of the minerals given above is/are required by the human body for the contraction of mus...

Consider the following animals: 1. Sea cow 2. Sea horse 3. Sea lion Which of the above is/are mammal/mammals?

Recombinant DNA technology (Genetic Engineering) allows genes to be transferred 1. Across different species of plants. 2. From animals to plants. 3. From mic...

Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by norma...

Ball bearings are used in bicycles, cars, etc., because

During a thunderstorm, the thunder in the skies is produced by the 1. Meeting of cumulonimbus clouds in the sky 2. Lightning that separates the nimbus clouds...

Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this? 1. Dispersion 2. Refraction 3. ...

The efforts to detect the existence of Higgs boson particle have become frequent news in the recent past. What is /are the importance/importance of discoveri...

Which of the following diseases can be transmitted from one person to another through tattooing? 1. Chikungunya 2. Hepatitis B 3. HIV-AIDS Select the correct...