Haryana Police Exam (07.08.2021)

41. An image on a computer screen is made up of a matrix of________ .

(1) Byte
(2) Pixels
(3) Bit
(4) Palette

Correct Answer: (2) Pixels

Solution:A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.

A pixel is the basic logical unit in digital graphic.
The term "pixel" is actually short for "Picture Element."

42. What does dots per inch (DPI) measure?

(1) Number of bits
(2) Density of pixels on a computer screen
(3) Density of bits on the disk
(4) Density of the graphic file stored on the hard disk

Correct Answer: (2) Density of pixels on a computer screen

Solution:DPI, or dots per inch, is a measure of the resolution of a printed document or digital scan. The higher the dot density, the higher the resolution of the print or scan.

Typically. DPI is the measure of the number of dots that can be placed in a line across one inch, or 2.54 centimeters.

43. The most widely used type of database management system is:

(1) Flat Databsase
(2) Network Database
(3) Relational Database
(4) Hierarchical Database

Correct Answer: (3) Relational Database

Solution:The most widely used type of database management system is relational database.

It is a type of database that stores and provides access to data points that are related to one another.
Relational databases are based on the relational model, an intuitive, straightfor ward way of representing data in tables. In a relational data-base, each row in the table is a record with a unique ID called the key.

44. What do circles represent on a data flow diagram?

(1) Data Source and Destination
(2) Data Flow
(3) Transformation Process
(4) Data Repository

Correct Answer: (3) Transformation Process

Solution:Data flow diagram is a way of representing flow of data through a system/process.

Data Source and Destination : This is represented by a rectangle
Data Flow : This is represented by Arrow
Transformation Process : This is represented by Circle
Data Repository : This is represented by two parallel horizontal line

45. A server uses application software to support the client computer

(1) Back end
(2) Front end
(3) Programming
(4) Java

Correct Answer: (1) Back end

Solution:The back end refers to parts of a computer application or a program's code that allow it to operate and that cannot be accessed by a user. Most data and operating syntax are stored and accessed in the back end of a computer system.

Typically the code is comprised of one or more programming languages. The back end is also called the data access layer of software or hardware and includes any functionality that needs to be accessed and navigated to by digital means.

46. TG-37 A is a variety of following crop

(1) Groundnut
(2) Wheat
(3) Pearl Millet
(4) Maize

Correct Answer: (1) Groundnut

Solution:A new Trombay groundnut (TG) variety, TG 37A is Variety of groundnut.

The mutant variety TG-37A was officialy approved in 2004. It was developed by hybridization with mutant variety TG-26 obtained by irradiation of seeds with gamma rays (300 Gy).
Main Improved attributes of mutant variety are semi. dwarfness, compact pod set. ting, high yield and smooth pod surface.

47. Arhar (pigeon pea) is commonly known as

(1) Black gram
(2) Red gram
(3) Bengal gram
(4) Green gram

Correct Answer: (2) Red gram

Solution:Pigeonpea (Cajanuscajan (L.) Millsp.), commonly known as red gram or tur or Arhar.

After gram, arhar is the second most important pulse crop in India.

48. The type of germination in mungbean seed_________ .

(1) Epigeal
(2) Hypogeal
(3) Hypo-epigeal
(4) Epi-hypogeal

Correct Answer: (1) Epigeal

Solution:Epigeal germination is marked by the uplifting of the hypocotyl above the ground level. Cotyledon divides quickly to form leaves.

This type of germination can be observed in mung bean plants (Phaseolusradiatus).

49. The soybean have_______percent protein content

(1) 20
(2) 30
(3) 40
(4) 10

Correct Answer: (3) 40

Solution:Soybean seeds contain to 40% of crude protein and about 20% of fat, and soybean meal characterized higher content of crude protein about 40-49%.

Various soy products are available, including soy flour, soy protein, tofu, soy milk, soy sauce, and soybean oil.

50. Groundnut seed normally contains_per cent protein and_percent oil

(1) 20 and 45
(2) 25 and 45
(3) 30 and 50
(4) 35 and 50

Correct Answer: (2) 25 and 45

Solution:The groundnut is particularly valued for its protein content (26%). On equal weight basis (Kg for Kg), groundnuts contain more protein than meat and about two and a half times more than eggs.

Being an oil seed crop, it contains 40 to 49% oil. In addition to protein, groundnuts are a good source of calcium. phosphorus, iron, zine and boron. The groundnuts also contains vitamin E and small amounts of vitamin B complex.