List of practice Questions

Verbosity : Brevity :: Insolence : __________

Choose the word that best fills the blank.

Does a step up transformer contradict the principle of conservation of energy? Justify your answer.

A light copper ring is freely suspended by a light string. A bar magnet is held horizontally with its length along the axis of the ring. The magnet is moved towards the ring with its N pole facing the loop. What will happen to the ring and its position? Explain.

A narrow electron beam passes undeviated through an electric field of \( 4\times10^{4}\ \text{V/m} \) and a magnetic field \( 2\times10^{-3}\ \text{weber/m}^2 \) applied at the same place. The speed of the electron beam will be:

Identify the correct statements:
• [A.] The ruins at Hampi were brought to light in 1800.
• [B.] Colonel Colin prepared the first survey map of the Hampi.
• [C.] Much of the initial information Colin received was based on the memories of priests of the Virupaksha temple and the shrine of Pampadevi.
• [D.] From 1900, photographers began to record the monuments which enabled scholars to study them.
• [E.] As early as 1936 epigraphists began collecting several dozen inscriptions. Choose the correct answer from the options given below:

In a haplodiploid ant species, sons are haploid and produced from unfertilized eggs, while daughters are diploid and produced from fertilized eggs. A single queen establishes a colony after mating with three different unrelated males. The queen uses the sperm from all three males equally to produce her female offspring. The average genetic relatedness between two randomly selected female offspring in this colony will be:

Hydrogenation of ethene represented by,
\[ \text{C}_2\text{H}_4\text{(g)} + \text{H}_2\text{(g)} \rightarrow \text{C}_2\text{H}_6\text{(g)} \]
is an example of:

Which of the following is the correct IUPAC name for the coordination compound
\[ [\text{Pt}(\text{NH}_3)_2\text{Cl}(\text{NO}_2)] \]

The species-area relationship is represented on a log scale as

Consider the table 'STUDENT':

Name	Class	DOB	Gender	City	Marks
Rohan	XI	2008	M	Delhi	85
Priya	XII	2006	F	Mumbai	92
Ankit	XI	2007	M	Delhi	88
Nidhi	XII	2006	F	Mumbai	90
Aarav	IX	2009	M	Kolkata	78
Simran	XI	2007	F	Chandigarh	94
Rahul	XII	2006	M	Pune	80

From the above table 'STUDENT', which query will return all the students from class 'XI'?

Match List-I with List-II:

List-I	List-II
(A) Retrieve all rows with duplicates removed	(I) GROUP BY
(B) Filter rows based on condition	(II) ORDER BY
(C) Aggregate data into groups	(III) DISTINCT
(D) Sort rows in ascending or descending order	(IV) WHERE

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Network Devices)	List-II (Description)
(A) Switch	(I) Sends signals only to the selected devices instead of sending to all.
(B) Repeater	(II) An analog device that works with signals on the cables to which it is connected.
(C) Hub	(III) A network device used to connect different devices through wires.
(D) Ethernet Card	(IV) A network adapter acts as an interface between the computer and the network.

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Key Concepts in Database)	List-II (Description)
(A) Database Schema	(I) Snapshot of the database
(B) Database Instance	(II) Restriction on the type of data
(C) Data Dictionary	(III) Skeleton of the database
(D) Data Constraint	(IV) Database catalog

Choose the correct answer from the options given below:

Calculate the degree and cardinality of the given relation below:

ID	Name	Email	Address	Phone No.
001	Ajay	ajay@abc.com	A1-Shakti Nagar, Bangalore	55218936
002	Amit	amit@abc.com	C32-Indira Nagar, Lucknow	45321789
003	Ashu	ashu@abc.com	117/82 Patel Nagar, Delhi	98567894
004	Ashok	ashok@abc.com	249-250, Motinagar, Gujrat	97698541

Sales

ID	customer_id	order_date	total_amount
1	C101	2022-01-15	1000
2	C102	2022-02-20	500
3	C103	2022-03-10	800
4	C101	2022-04-05	600

What is the result of the following query with respect to the given relation 'Sales'?

SELECT COUNT(DISTINCT customer_id) FROM Sales;

Match List-I with List-II:

List-I (Topology)	List-II (Characteristics)
(A) Star	(I) Single backbone cable
(B) Bus	(II) Central hub or switch
(C) Ring	(III) Unidirectional link
(D) Hybrid	(IV) Multiple branches

Choose the correct answer from the options given below:

Consider the following numList:

Sequence the following output obtained after each pass of comparison using bubble sort.

(A) \(7\quad 8\quad 1\quad -9\quad 4\quad 13\)
(B) \(7\quad 1\quad -9\quad 4\quad 8\quad 13\)
(C) \(-9\quad 1\quad 4\quad 7\quad 8\quad 13\)
(D) \(1\quad -9\quad 4\quad 7\quad 8\quad 13\)

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I (Malware)	List-II (Threat)
(A) Keylogger	(I) It generates revenue using “pay per click” mechanism to charge its clients against the number of clicks on their displayed ads.
(B) Adware	(II) Makes the logs of daily keyboard usage and may send it to an external entity as well.
(C) Spyware	(III) Standalone programs that are capable of replicating on their own and can spread to other computers through the network.
(D) Worm	(IV) Usually tracks internet usage data and sells it to advertisers.

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
(A) Union Ministry of Labour	(I) Casual wage labourers
(B) Construction workers	(II) Collection of formal sector employment data
(C) MNREGA	(III) Rural employment
(D) Association of TANWA	(IV) Women workers

Choose the correct answer from the options given below:

Rural Development

There is a greater need today to make rural areas more vibrant through diversification into dairying, poultry, fisheries, vegetables and fruits and linking up the rural production centres with the urban and foreign markets to realise higher returns on the investments in the products. Moreover, infrastructure elements like credit and marketing, farmer-friendly agricultural policies and a constant appraisal and dialogue between farmers’ groups and state agricultural departments are essential to realise the full potential of the sector.

Today we cannot look at the environment and rural development as two distinct subjects. There is need to invent or procure alternate sets of eco-friendly technologies that lead to sustainable development in different circumstances such as organic farming. From these, each rural community can choose whatever will suit its purpose. We need to learn from, and also try out when found relevant, practices from the available set of ‘best practice’ illustrations to speed up this process of ‘learning by doing’. A good example of such practice is creating a group and channelising their savings through micro credit which functions like mini banks for the development of agriculture.

GDP and Welfare

GDP is the sum total of the value of goods and services created within the geographical boundary of a country in a particular year. In order to compare the GDP figures and other macroeconomic variables of different countries or to compare the GDP figures of the same country at different points of time, we take the help of real GDP instead of relying on current market prices. The ratio of nominal GDP to real GDP gives us an idea of how prices have moved from the base year to the current year. The Consumer Price Index (CPI) and Wholesale Price Index (WPI) are the other important ways to measure change of prices in an economy.

GDP gets distributed among the people as incomes and may treat higher level of GDP of a country as an index of greater well-being of the people of that country. But it may be incorrect to treat GDP as an index of the welfare of the country based on three reasons. Firstly, the distribution of GDP is not uniform, secondly, non-monetary exchanges are not accounted as part of economic activity and lastly, GDP does not take into account externalities.