28 November 2021- Evening Shift- UGC NET Paper 1

Total Questions: 50

31. In respect of computer software, features of a typical operating system include:

A. The interface-allowing communication between the user and the computer
B. Memory management-allocating internal memory (RAM) to programs and data in use and retrieving and storing data on the external memory devices
C. Resource handling-controlling peripheral devices (input and output devices) and handling user requests for peripheral devices
D. Internet access-providing connectivity to the services on the Internet
Choose the correct answer from the options given below:

Correct Answer: (C) A, B and C only

32. Match List I with List II

List I (Description)
A. Authoring language used to create documents to be viewed on the World Wide Web
B. Computer that responds to requests to provide information and services over the Internet
C. Defines how messages are transmitted and formatted over the Internet
D. Software that enables users to access/view documents and other resources on the Internet
List II (Appropriate Technical Term)
I. Browser
II. HTTP
III. HTML
IV. Internet server
Choose the correct answer from the options given below:

Correct Answer: (D) A - III, B - IV, C - II, D - I

33. Arrange the following optical storage devices in decreasing order of their storage capacity

A. DVD
B. CD-ROM
C. Blu-Ray
Choose the correct answer from the options given below

Correct Answer: (B) C, A, В

34. Given below are two statements

Statement I: An operating system controls peripherals, and allocates memory and processor time.
Statement II: An operating system provides Internet access.
In light of the above statements, choose the correct answer from the options given below:

Correct Answer: (C) Statement I is true but Statement II is false

35. Which of the following is the appropriate GUI (Graphical User Interface) component used to select one from multiple alternatives?

Correct Answer: (D) Radio button

36. Which one among the following diseases is NOT caused due to exposure to ultra-violet radiation?

Correct Answer: (A) Bronchitis

37. Match List I with List II

List I (Class of water pollutants)
A. Disease-causing agents
B. Oxygen depleting wastes
C. Inorganic plant nutrients
D. Water-soluble inorganic chemicals
List II (Example/Explanation)
I. Organic wastes decomposed by aerobic bacteria
II. Acids, salts, compounds of toxic metals
III. Bacteria, protozoa, worms etc.
IV Water-soluble nitrates and phosphate cause excessive growth of algae etc
Choose the correct answer from the options given below:

Correct Answer: (C) A - III, В - І, С - IV, D - II

38. Given below are two statements

Statement I: Nitrification results in an increase in effluent ammonia toxicity
Statement II: Denitrification reduces nitrate to nitrogen gas using bacteria
In light of the above statements, choose the most appropriate answer from the options given below:

Correct Answer: (D) Statement I is incorrect but Statement II is correct

39. Flotation is a unit operation, used in wastewater treatment to

A. Remove the lighter suspended solids
B. Concentrate biological sludge
C. Remove oil and grease
D. Remove the temporary hardness of the water
Choose the correct answer from the options given below:

Correct Answer: (A) A, B and C only

40. Match List I and List II:

List I
Ozone depleting substance
A. C₃HF₇
B. C₂FH₃Cl₂
C. C₂F₄Cl₂
D. CF₃Br
List II
I. HCFC
II. Halons
III. HFC
IV. CFC
Choose the correct answer from the options given below:

Correct Answer: (B) A - III, B - I, C - IV, D - II