UPSC Science & Technology Questions

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. Twinkle of stars in the sky 5. Polest…

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

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 muscle…

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. Int…

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 an…

Which of the following statements is/are correct? 1. Viruses lack enzymes necessary for the generation of energy. 2. Viruses can be cultured in any synthetic me…

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

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. Twinkle of stars in the sky 5. Polest…

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. Int…

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. Twinkle of stars in the sky 5. Polest…

The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force and strong nuclear force. With reference to the…

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

Recombinant DNA technology (Genetic Engineering) allows genes to be transferred 1. across different species of plants 2. from animals to plants 3. from microorg…

Graphene is frequently in news recently. What is its important? 1. It is a two-dimensional material and has good electrical conductivity. 2. It is one of the th…

A team of scientists at Brookhaven National Laboratory, including those from India, created the heaviest anti-matter (anti-helium nucleus). What is/are the impl…

With reference to ‘stem cells', frequently in the news which of the following statements is/are correct? 1. Stem cells can be derived from mammals only. 2. Stem…

Consider the following statements: If there were no phenomenon of capillarity: 1. it would be difficult to use a kerosene lamp. 2. one would not be able to use …

Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calor…

What is "Virtual Private Network"?

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and 0 negative. The blood gr…