Q&A: practice questions with answers

Concept: The Naikda (Naikdas) uprising of 1858 took place in the Panchmahals–Sankheda region of present Gujarat (around today’s Chhota Udepur district).

1. The Naikdas rose under Rupa Naik and Kewal Naik and used guerrilla tactics, attacking British police posts (thanas).
2. Rupa Naik surrendered to the British in 1859 under an offer of amnesty, not in 1860 — so statement D is not correct.

Yaad rakhein: Naikda revolt: 1858, Panchmahals/Sankheda, leaders Rupa & Kewal; surrender in 1859.

Answer: (D) The leader Rupa surrendered before the British in 1860.

Concept: In a transverse wave, particles of the medium vibrate perpendicular to the direction in which the wave travels.

1. When a stretched string is plucked, each part of the string moves up–down while the disturbance travels along the string.
2. So the wave on a string (sitar, guitar, violin) is a mechanical transverse wave.

Yaad rakhein: String = transverse; sound in air = longitudinal.

Answer: (D) Transverse wave

Concept: The Directorate General of Civil Aviation (DGCA), under the Ministry of Civil Aviation, is India’s civil aviation regulator.

1. It handles safety regulation, licensing of pilots and aerodromes, airworthiness and certification of airports, i.e. the regulatory side of aviation infrastructure.
2. The Airports Authority of India builds, operates and manages airports — it is an operator, not the regulator.

Yaad rakhein: DGCA = regulator (rules, licences); AAI = operator (runs airports).

Answer: (B) Directorate General of Civil Aviation

Concept: The Ramoshis were a community of the Western Ghats (Maharashtra) who had served the Marathas as hill-fort guards and village watchmen.

1. After the fall of the Peshwas (1818), British rule left them without work, leading to the Ramoshi uprising (1822, under Chittur Singh; 1825–26 under Umaji Naik).
2. Hence they guarded the forts of the Marathas.

Yaad rakhein: Ramoshi → Maratha forts → Umaji Naik.

Answer: (D) Marathas

Concept: The Kakatiya Rudreshwara (Ramappa) Temple at Palampet, Mulugu district, Telangana, was inscribed as a UNESCO World Heritage Site in 2021.

1. It was built in 1213 CE under Kakatiya ruler Ganapati Deva by general Recharla Rudra; it is named after its sculptor Ramappa.
2. Its bricks are so light that they float on water.

Yaad rakhein: Ramappa = Telangana = 2021 (India’s 39th WHS).

Answer: (A) Telangana

Concept: Vitamin A (retinol) is needed to make rhodopsin, the light-sensitive pigment of rod cells in the retina.

1. Rods work in dim light; low rhodopsin causes night blindness (nyctalopia), and later xerophthalmia.
2. Vitamin C → scurvy, B12 → pernicious anaemia, D → rickets.

Yaad rakhein: A for “Aankh” (eyes): Vitamin A → night blindness.

Answer: (B) Vitamin A

Concept: The World Bank’s State of Social Protection Report 2025 (“The 2-Billion-Person Challenge”) reviewed social protection coverage in developing countries.

1. It noted that during COVID-19, emergency social protection responses reached about 1.7 billion people.
2. The report highlights that about 2 billion people in developing countries still lack any social protection coverage.

Yaad rakhein: COVID response reach = 1.7 billion; still uncovered ≈ 2 billion.

Answer: (B) 1.7 billion

Concept: Under the Liberalised Remittance Scheme (LRS), Tax Collected at Source (TCS) applies on foreign remittances above a threshold.

1. Budget 2025-26 raised this TCS threshold on remittances under LRS from ₹7 lakh to ₹10 lakh.
2. It also removed TCS on education remittances financed by loans from specified financial institutions.

Yaad rakhein: LRS-TCS: 7 → 10 lakh (Budget 2025).

Answer: (B) ₹10 lakh

Concept: In Windows, pressing Delete on a file does not erase it immediately.

1. The file is moved to the Recycle Bin, from where it can be restored.
2. It is permanently erased only when the Recycle Bin is emptied, or when Shift + Delete is used.

Yaad rakhein: Delete → Recycle Bin; Shift + Delete → permanent.

Answer: (C) The Recycle Bin

Concept: The IMF World Economic Outlook Update of January 2025 projected global growth at 3.3% for both 2025 and 2026.

1. This is below the historical (2000–19) average of 3.7%.
2. In the same update India’s growth was projected at 6.5% for 2025-26.

Yaad rakhein: IMF Jan 2025: World 3.3%; India 6.5%.

Answer: (B) 3.3%

Concept: PMAY-Urban 2.0 (approved 2024) aims to provide 1 crore urban houses; it includes a Technology & Innovation Sub-Mission (TISM).

1. TISM supports the use of innovative, green, disaster-resilient and energy-efficient construction technologies and housing designs suited to different geo-climatic zones.
2. Housing loans with interest subsidy are a separate component (Interest Subsidy Scheme), not TISM.

Yaad rakhein: TISM = Technology → new, green, sustainable building methods.

Answer: (B) It is focused on promoting green building techniques and energy-efficient housing designs across geo-climatic regions.

Concept: Cache is a small, very fast memory (usually SRAM) between the CPU and main memory (RAM).

1. It stores frequently used data/instructions, is faster than RAM, and is located inside or very close to the CPU (L1, L2, L3).
2. It is volatile primary-side memory, not secondary storage (like HDD/SSD). So statement A is incorrect.

Yaad rakhein: Speed order: Registers > Cache > RAM > Secondary storage.

Answer: (A) Cache memory is a form of secondary storage.

Concept: $\text{SP}=\text{CP}\times \frac{100+\text{P}\%}{100}$ and $\text{SP}=\text{MP}\times \frac{100-\text{D}\%}{100}$.

1. $\text{SP}=780\times \frac{126}{100}=982.8$
2. $\text{MP}\times \frac{78}{100}=982.8$
3. $\text{MP}=\frac{982.8\times 100}{78}=1260$

Trick: Direct: $\text{MP}=\text{CP}\times \frac{126}{78}=780\times \frac{126}{78}=10\times 126=1260$ (since $780=78\times 10$).

Answer: (C) ₹1,260

Concept: $\text{Sum}=\text{Average}\times \text{Count}$

1. Sum of first two $=2\times 77=154$; third $=102$.
2. Remaining two $=655-154-102=399$
3. Average $=\frac{399}{2}=199.5$

Trick: Subtract the known parts from the total, then divide by how many are left.

Answer: (A) $199.5$

Concept: At the same time the sun's elevation is the same, so height : shadow is the same for both objects (similar triangles).

1. $\frac{h}{44.5}=\frac{14}{5}$
2. $h=\frac{14\times 44.5}{5}=14\times 8.9$
3. $h=124.6\text{m}$

Trick: Height grows in the same ratio as shadow: $\frac{44.5}{5}=8.9$ times, so $14\times 8.9$.

Answer: (A) $124.6\text{m}$

Concept: A number is divisible by 16 if the number formed by its last 4 digits is divisible by 16.

1. 1382 and 1702 are not even divisible by 4 (82, 02) ⇒ rejected; 1165 is odd.
2. $1584÷16=99$ exactly ($16\times 99=1584$).

Trick: Quick test: $1584=8\times 198$ and 198 is even ⇒ divisible by $16$.

Answer: (D) 1584

Concept: If two quadratics have both roots common, their coefficients are proportional: $\frac{a}{1}=\frac{b}{3}=\frac{c}{2}$.

1. $x^2+3x+2=(x+1)(x+2)$ ⇒ roots $-1,-2$. So $b=3a,c=2a$.
2. (A) $4a-2b+c=4a-6a+2a=0$ ✓; (B) $a-b+c=a-3a+2a=0$ ✓; (D) $a+c=3a=b$ ✓.
3. (C) $2c+2b=4a+6a=10a\ne 4a$ ✗ — this one is NOT true.

Trick: Put $a=1,b=3,c=2$ in every option and check.

Answer: (C) $4a=2c+2b$

Concept: After 74% on rent, the remaining 26% covers conveyance, grocery and savings.

1. Remaining amount $=385+2725+621=3731$
2. $26\%$ of salary $=3731$
3. Salary $=\frac{3731\times 100}{26}=14350$

Trick: Unit digit check: $26\%$ of 14,350 $=3731$ ✓.

Answer: (B) ₹14,350

Concept: Fourth proportional of $a,b,c$ $=\frac{bc}{a}$; mean proportional of $a,b$ $=\sqrt{ab}$.

1. Fourth proportional $=\frac{8\times 12}{2}=48$
2. Mean proportional $=\sqrt{9\times 4}=6$
3. Ratio $=48:6=8:1$

Yaad rakhein: $a:b=c:d$ ⇒ $d=\frac{bc}{a}$; $a:x=x:b$ ⇒ $x=\sqrt{ab}$.

Answer: (C) $8:1$

Concept: $\text{Average}=\frac{\text{Sum of observations}}{\text{Number of observations}}$

1. Sum $=300+250+350+200+400=1500$
2. Average $=\frac{1500}{5}=300$

Trick: Deviation method around 300: $0-50+50-100+100=0$ ⇒ average $=300$.

Answer: (C) ₹300