Science-technology Questions - upsc Practice

#1

Consider the following with respect to Semiconductor: 1. The compound semiconductors can be composed of single species of atoms. 2. Conductivity of an intrinsic semiconductor depends on the temperature of its surrounding. 3. A p-n junction is the basic building block of many semiconductor devices. How many statements given above are incorrect?

Only one Only two All three None

#2

With respect to superconductors, consider the following statements: 1. Type-I superconductors allow partial penetration of magnetic fields. 2. Type-II superconductors exhibit perfect diamagnetism and expel magnetic field completely. Which of the following statements given above is/are incorrect?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#3

With reference to superconductivity, consider the following statements: 1. The temperature at which electrical resistivity drops to zero is called absolute zero temperature. 2. In a superconductor, theoretically the electric current can flow indefinitely without dissipating energy in form of heat. Which of the statements given above is/are correct?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#4

Which of the following countries is the world’s largest producer of microchips and semiconductors?

China Taiwan South Korea The USA

#5

Consider the following statements with reference to Design Linked incentive (DLI) scheme for semiconductors: 1. It aims to offer financial incentives as well as design infrastructure support across various stages of development and deployment of semiconductor design. 2. The tenure of the fiscal support shall be for a period of ten years.Which of the following statements given above is/are incorrect?

1 only 2 only Both 1 and 2 Neither 1 nor 2

#6

With reference to the ‘Central Bureau of Communication (CBC)’, consider the following statements: 1. It is a statutory body under the Union Ministry of Information and Broadcasting. 2. It acts as an advisory body on media strategy. 3. It is responsible for creating awareness and disseminating information about various government programs, schemes, and policies in India. How many of the statements given above are correct?

Only one Only two All three None

#7

Which of the following is correct with reference to White fi communication technology?

It describes the use of the electromagnetic spectrum’s visible light region for communication. A method for creating wireless networks within analog TV broadcast frequencies. It relates to the development of wi-fi technology that eliminates white noise entirely. An essentially solar-powered broadband wireless technology.

#8

Consider the following statements with reference to FASTag: 1. It employs Radio Frequency Identification (RFID) technology for making toll payments. 2. Opening a prepaid account to be linked to FASTag does not require an existing relationship with the issuer bank. Which of the statements given above is/are correct?

1 only 2 only Both 1 and 2 Neither 1 nor 2