UPSC NDA-1

31. Match List I with List II and select the correct answer using the code

Match List I with List II and select the correct answer using the code given below the Lists :

Subscribe on YouTube
List I
(Amendment to the Constitution of India)		 List II
(Subject)
A. 52nd Amendment Act, 1985 1. Reduction of voting age from 21 to 18
B. 73rd Amendment Act, 1992 2. Right to Education
C. 61st Amendment Act, 1988 3. Panchayati Raj
D. 86th Amendment Act, 2006 4. Disqualification on grounds of defection
A-4, B-1, C-3, D-2
A-4, B-3, C-1, D-2
A-2, B-3, C-1, D-4
A-2, B-1, C-3, D-4
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The correct matching code is A-4, B-3, C-1, D-2. This corresponds to option (d) in the provided table.
This question tests knowledge of key amendments to the Constitution of India and their subjects.
– The 52nd Amendment Act, 1985 introduced the Tenth Schedule, which deals with the disqualification of Members of Parliament and state legislatures on the ground of defection (Match A-4).
– The 73rd Amendment Act, 1992 granted constitutional status to the Panchayati Raj Institutions and added Part IX and the Eleventh Schedule to the Constitution (Match B-3).
– The 61st Amendment Act, 1988 reduced the voting age for elections to the Lok Sabha and the Legislative Assemblies of States from 21 years to 18 years (Match C-1).
– The 86th Amendment Act, 2002 inserted Article 21A in the Constitution, making education a Fundamental Right for children between the ages of 6 and 14 years. (Note: The year is 2002, not 2006 as printed in the list, but the subject is correctly identified as Right to Education). (Match D-2).
Thus, the correct match is A-4, B-3, C-1, D-2, which corresponds to option (d) in the question’s code table.

Join Our Telegram Channel

32. Which one of the following statements regarding King Krishnadevaraya i

Which one of the following statements regarding King Krishnadevaraya is NOT correct ?

Subscribe on YouTube
He was a great scholar of Telugu and Sanskrit
Foreign travellers Paes and Nuniz visited his court
Barbosa praised him for the great justice and equity prevailing in his empire
He wrote his magnum opus Amuktamalyada in Sanskrit
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The statement that King Krishnadevaraya wrote his magnum opus Amuktamalyada in Sanskrit is NOT correct.
King Krishnadevaraya (reigned 1509-1529) was a prominent ruler of the Vijayanagara Empire. He was known for his military prowess, administrative skills, and patronage of arts and literature. He himself was an accomplished scholar and poet. His most famous literary work is ‘Amuktamalyada’.
Krishnadevaraya wrote ‘Amuktamalyada’ in Telugu, not Sanskrit. This epic poem is considered one of the masterpieces of Telugu literature. He was indeed a scholar of both Telugu and Sanskrit and patronized poets and scholars in both languages, including the Ashtadiggajas (eight famous poets) in his court. Portuguese travellers like Domingo Paes, Fernão Nuniz, and Duarte Barbosa visited his empire and provided valuable accounts of its prosperity, administration, and the king’s character, praising aspects like justice and equity.

Join Our Telegram Channel

33. Which one of the following physical quantities does NOT affect the res

Which one of the following physical quantities does NOT affect the resistance of a cylindrical resistor ?

Join Our Telegram Channel
The current through it
Its length
The resistivity of the material used in the resistor
The area of cross-section of the cylinder
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The current through the cylindrical resistor does NOT affect its resistance.
The resistance of a resistor is a property of the material and its geometry. For a cylindrical resistor made of a homogeneous material, its resistance (R) is determined by the formula R = ρ * (L/A), where ρ (rho) is the resistivity of the material, L is the length of the resistor, and A is the area of its cross-section.
According to the formula R = ρ * (L/A), the resistance is affected by the resistivity of the material, the length, and the area of cross-section. The current flowing through the resistor is a result of the applied voltage and the resistor’s resistance (as described by Ohm’s law, V=IR). Changing the voltage changes the current, but the resistance of the resistor itself remains constant (assuming constant temperature and material properties). Therefore, the current through the resistor does not affect its resistance; rather, the resistance affects the current for a given voltage.

Subscribe on YouTube

34. Which one of the following statements is correct with regard to the ma

Which one of the following statements is correct with regard to the material of electrical insulators ?

Join Our Telegram Channel
They contain no electrons
Electrons do not flow easily through them
They are crystals
They have more number of electrons than the protons on their surface
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The correct statement is that electrons do not flow easily through electrical insulators.
Electrical insulators are materials characterized by their high resistance to the flow of electric current. This property arises because the electrons in these materials are tightly bound to the atoms and are not free to move readily under the influence of an electric field.
Option A is incorrect; all matter contains electrons. Option C is incorrect; insulators can be crystalline (like quartz), amorphous (like glass), or polymeric (like rubber, plastic). Option D is incorrect; insulators are generally electrically neutral, meaning the total number of electrons is equal to the total number of protons. The key characteristic of insulators is the low mobility of charge carriers, specifically electrons in most common insulators.

Subscribe on YouTube

35. Which one of the following physical quantity has the same unit as that

Which one of the following physical quantity has the same unit as that of pressure ?

Subscribe on YouTube
Angular momentum
Stress
Strain
Work
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
Stress has the same unit as that of pressure.
Pressure is defined as force per unit area (P = F/A). Its unit is Newton per square meter (N/m²), also known as Pascal (Pa). Stress is also defined as force per unit area, representing the internal force per unit area within a material resisting deformation (Stress = F/A). Therefore, stress also has the unit of N/m² or Pascal (Pa).
Angular momentum is the product of moment of inertia and angular velocity; its unit is kg⋅m²/s or J⋅s. Strain is a dimensionless quantity, defined as the ratio of change in dimension to the original dimension (e.g., change in length/original length). Work is defined as force times distance; its unit is Newton-meter (N⋅m) or Joule (J). Out of the given options, only stress shares the same unit (N/m² or Pa) with pressure.

Join Our Telegram Channel

36. The time period of a simple pendulum made using a thin copper wire of

The time period of a simple pendulum made using a thin copper wire of length L is T. Suppose the temperature of the room in which this simple pendulum is placed increases by 30°C, what will be the effect on the time period of the pendulum ?

Subscribe on YouTube
T will increase slightly
T will remain the same
T will decrease slightly
T will become more than 2 times
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The time period of the pendulum, T, will increase slightly.
The time period (T) of a simple pendulum is given by the formula T = 2π * sqrt(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. The length of the pendulum is the length of the wire. Materials expand when heated due to thermal expansion.
When the temperature of the room increases, the copper wire of the simple pendulum will undergo thermal expansion, causing its length L to increase. According to the formula T = 2π * sqrt(L/g), the time period T is directly proportional to the square root of the length L (T ∝ √L). Since the length L increases with the increase in temperature, the time period T will also increase. The thermal expansion for a 30°C temperature change is typically small for common materials like copper, leading to a slight increase in the length and consequently a slight increase in the time period.

Join Our Telegram Channel

37. The radii of curvature of the faces of a double convex lens are 10 cm

The radii of curvature of the faces of a double convex lens are 10 cm and 20 cm. The refractive index of the glass is 1.5. What is the power of this lens (in units of dioptre) ?

Subscribe on YouTube
+7·5 D
–7·5 D
+2·5 D
+5·0 D
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The correct answer is +7.5 D.
For a thin lens, the power (P) is given by the reciprocal of the focal length (f) in meters, P = 1/f. The focal length of a lens in air can be calculated using the lensmaker’s formula: 1/f = (n – 1) * (1/R₁ – 1/R₂), where n is the refractive index of the lens material, and R₁ and R₂ are the radii of curvature of the two surfaces. For a double convex lens, assuming light comes from the left, the first surface is convex (R₁ > 0) and the second surface is also convex but faces the opposite direction (R₂ < 0).
Given: R₁ = +10 cm = +0.1 m, R₂ = -20 cm = -0.2 m (negative because the center of curvature is on the same side as the incoming light for the second surface of a double convex lens), and n = 1.5.
Using the lensmaker’s formula:
1/f = (1.5 – 1) * (1/0.1 – 1/(-0.2))
1/f = 0.5 * (1/0.1 + 1/0.2)
1/f = 0.5 * (10 + 5)
1/f = 0.5 * 15
1/f = 7.5 m⁻¹
Power P = 1/f = 7.5 Dioptre (D). Since the focal length is positive (1/7.5 m), it is a converging lens, which is expected for a double convex lens in air.

Join Our Telegram Channel

38. Which one among the following countries is the largest trading partner

Which one among the following countries is the largest trading partner of India in external trade for the year 2015-2016 ?

Subscribe on YouTube
United States of America
United Kingdom
United Arab Emirates
China
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
China was the largest trading partner of India in external trade for the year 2015-2016.
Based on official trade data from the Ministry of Commerce and Industry, Government of India, for the fiscal year 2015-2016, China was India’s largest trading partner in terms of total trade turnover (exports + imports). The trade value with China significantly exceeded that with the United States, United Arab Emirates, or the United Kingdom in that period.
India’s major trading partners can fluctuate over time based on geopolitical and economic factors. While the US is often a major destination for Indian exports, the volume of imports from China typically makes it the largest overall trading partner in many recent years, including 2015-2016.

Join Our Telegram Channel

39. The Headquarters of Eastern Railway Zone of Indian Railway is located

The Headquarters of Eastern Railway Zone of Indian Railway is located at

Subscribe on YouTube
Bhubaneswar
Kolkata
Hajipur
Guwahati
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The Headquarters of Eastern Railway Zone of Indian Railway is located at Kolkata.
Indian Railways is divided into several zones for administrative purposes, each with its headquarters in a prominent city. The Eastern Railway (ER) zone is headquartered in Kolkata.
Other railway zone headquarters mentioned in the options:
– Bhubaneswar: Headquarters of East Coast Railway (ECoR).
– Hajipur: Headquarters of East Central Railway (ECR).
– Guwahati: Headquarters of Northeast Frontier Railway (NFR).

Join Our Telegram Channel

40. Which one of the following Himalayan rivers does NOT originate from ac

Which one of the following Himalayan rivers does NOT originate from across the Himalayas ?

Join Our Telegram Channel
Indus
Satluj
Ganga
Brahmaputra
This question was previously asked in
UPSC NDA-1 – 2017
Download PDFAttempt Online
The Ganga river does NOT originate from across the Himalayas.
Rivers originating ‘across the Himalayas’ are also known as Trans-Himalayan rivers. Their sources lie on the northern side of the Great Himalayan range, typically in Tibet.
– Indus originates near Mansarovar lake in Tibet.
– Satluj originates from Lake Rakshastal near Mansarovar in Tibet.
– Brahmaputra originates from Chemayungdung Glacier in Tibet.
– Ganga originates from the Gangotri Glacier in Uttarakhand, India, which is on the southern slopes of the Great Himalayas. The main headstream is Bhagirathi, which meets Alaknanda at Devprayag to form the Ganga.
The Trans-Himalayan rivers (Indus, Satluj, Brahmaputra) are older than the Himalayas and have cut deep gorges through the mountains. Himalayan rivers (like Ganga and Yamuna) originate south of the main range.

Subscribe on YouTube
Page 1Page 2Page 3Page 4Page 5
Test 1Test 2Test 3Test 4Test 5Test 6Test 7Test 8Test 9Test 10Test 11Test 12Test 13Test 14Test 15Test 16Test 17Test 18