Q&A: practice questions with answers

Concept: A page fault occurs when a program accesses a page that is not currently in main memory (RAM).

1. If the page was swapped out to disk, the OS must fetch it back – this is a page fault.
2. Writing to read-only memory gives a protection fault, not a page fault; cache access is a cache hit/miss.

Yaad rakhein: Page not in RAM → page fault → OS loads it from disk.

Answer: (C) Attempting to access a memory address that has been swapped out to the hard drive

Concept: Under NTEP (NHM), the 100-Days Intensified TB Mukt Bharat Abhiyaan was run nationwide.

1. It was launched on 7 December 2024 and concluded around World TB Day, 24 March 2025.
2. It covered high-priority districts with active case-finding and nutrition support.

Yaad rakhein: 100 days: 7 Dec 2024 → 24 Mar 2025 (World TB Day).

Answer: (A) 100

Concept: Ashoka created a special cadre of officers to propagate Dhamma.

1. In his 13th regnal year (Rock Edict V) he appointed the Dhamma Mahamatras.
2. Rajukas were rural/judicial officers; plain Mahamatras were general high officials.

Yaad rakhein: Dhamma spread → Dhamma Mahamatra (Rock Edict V).

Answer: (D) Dhamma Mahamatras

Concept: In January 2025 the Centre appointed Gyanendra Pratap Singh (IPS, Assam–Meghalaya cadre, 1991) as Director General of CRPF.

1. He was earlier DGP of Assam.
2. He succeeded Anish Dayal Singh, who retired in December 2024.

Yaad rakhein: CRPF DG 2025 → G. P. Singh.

Answer: (C) Gyanendra Pratap Singh

Concept: Govind Ballabh Pant (Bharat Ratna 1957) became the first Chief Minister of Uttar Pradesh in 1950.

1. He was earlier Premier of the United Provinces (1937, 1946).
2. Later he served as Union Home Minister (1955–61). Uttarakhand was formed only in 2000.

Yaad rakhein: Pant → first CM of UP, Home Minister after Patel.

Answer: (B) Uttar Pradesh

Concept: In April 2025 the Supreme Court dismissed a challenge to Urdu on the signboard of Patur Municipal Council (Maharashtra).

1. It upheld (did not overturn) the Bombay High Court, which had allowed Urdu – so statement 1 is wrong.
2. It said language is not religion – statement 2 is wrong.
3. It called Urdu part of the Ganga-Jamuni tehzeeb and criticised prejudice – statement 3 is correct.

Yaad rakhein: "Language is not religion" – SC, April 2025.

Answer: (D) Only 3

Concept: The Charter Act of 1853 separated the legislative and executive functions of the Governor-General’s Council.

1. It added 6 new legislative members to the council.
2. Of these, 4 were representatives of the provincial (local) governments – Madras, Bombay, Bengal and Agra; the other 2 were judges of the Calcutta Supreme Court.

Yaad rakhein: 1853: Central Legislative Council, 4 provincial representatives.

Answer: (B) 4

Concept: Part XIV, Articles 315–323 deal with Public Service Commissions.

1. Art. 315: PSCs for the Union and the States.
2. Art. 316: appointment and term; Art. 317: removal; Art. 318: conditions of service.

Yaad rakhein: 315 = set up, 316 = appoint, 317 = remove, 320 = functions.

Answer: (A) Article 315

Concept: The Legal Services Authorities (Amendment) Act, 2002 inserted Chapter VI-A.

1. It created Permanent Lok Adalats for disputes relating to public utility services (transport, post, power, water, hospitals, insurance etc.).
2. They can decide a case on merits if conciliation fails. Lok Adalats cannot hear non-compoundable criminal offences.

Yaad rakhein: 2002 → PLA for public utility services.

Answer: (B) To establish permanent Lok Adalats for public utility service disputes

Concept: Census 2011 urban agglomerations (UA) by population:

1. Greater Mumbai UA ≈ 18.4 million – largest.
2. Delhi UA ≈ 16.3 million; Kolkata UA ≈ 14.1 million; Bengaluru ≈ 8.5 million.
3. (As a single city, not UA, Mumbai is also first.)

Yaad rakhein: UA order 2011: Mumbai > Delhi > Kolkata > Chennai > Bengaluru.

Answer: (D) Mumbai

Concept: In Windows, a file/folder is renamed via the context menu or the F2 key.

1. Right-click → Rename, type the new name, press Enter – the simplest way.
2. Double-click opens it; Ctrl + R refreshes; dragging to Recycle Bin deletes it.

Yaad rakhein: Shortcut: select + F2 = rename.

Answer: (C) Right-click the file/folder → Select Rename

Concept: Major ports on the west coast: Kandla (Deendayal), Mumbai, JNPT, Mormugao, New Mangalore, Cochin.

1. Visakhapatnam is on the east coast (Andhra Pradesh, Bay of Bengal).
2. Kandla – Gujarat, Mangalore – Karnataka, Cochin – Kerala are all on the Arabian Sea.

Yaad rakhein: Vizag = deepest natural port on the east coast.

Answer: (C) Visakhapatnam

Concept: PHDCCI’s International Week 2025 (3rd edition, 3–7 March 2025) was scheduled at the India Expo Centre & Mart, Greater Noida.

1. The event was later postponed.
2. PHDCCI = PHD Chamber of Commerce and Industry, headquartered in New Delhi – the venue itself was Greater Noida.

Yaad rakhein: PHDCCI HQ: New Delhi; International Week 2025 venue: Greater Noida.

Answer: (A) Greater Noida

Concept: Nepal is a landlocked country bordering India, China only.

1. India–Nepal border (≈1,751 km) is open – citizens cross without visa/passport under the 1950 Treaty of Peace and Friendship.
2. Bangladesh and Myanmar have coastlines; Afghanistan is landlocked but has no open border with India.

Yaad rakhein: Open borders of India: Nepal and Bhutan.

Answer: (C) Nepal

Concept: Jannik Sinner (Italy) won the 2024 US Open men’s singles, beating Taylor Fritz in the final.

1. It was his second Grand Slam after the 2024 Australian Open.
2. Alcaraz won the 2024 French Open and Wimbledon; Djokovic won Olympic gold in 2024.

Yaad rakhein: 2024 Slams: Sinner – AO & US Open; Alcaraz – RG & Wimbledon.

Answer: (C) Jannik Sinner

Concept: Use $(p+q{)}^2=p^2+q^2+2pq$.

1. Perimeters: $4p+4q=100\Rightarrow p+q=25$.
2. Areas: $p^2+q^2=317$.
3. $(p+q{)}^2=625=317+2pq\Rightarrow 2pq=308$.
4. $pq=154$.

Trick: Check: $p=14,q=11$ gives $196+121=317$ ✓.

Answer: (A) $154{\text{cm}}^2$

Concept: $SI=\frac{P\times R\times T}{100}$; count days excluding the first day and including the last.

1. 2024 is a leap year, so February has 29 days.
2. Days: Feb $(29-14)=15$, March 31, April 15 ⇒ 61 days.
3. $T=\frac{61}{365}$ year.
4. $SI=\frac{3000\times 8\times 61}{100\times 365}=\frac{14640}{365}\approx 40.1$ ⇒ ₹40.

Yaad rakhein: Using 366 days also gives exactly ₹40.

Answer: (B) 40

Concept: Perimeter $=2(l+b)$, Area $=l\times b$.

1. Let the sides be $3x$ and $8x$.
2. $2(3x+8x)=22x=264\Rightarrow x=12$.
3. Sides: $36\text{m}$ and $96\text{m}$.
4. Area $=36\times 96=3456{\text{m}}^2$.

Trick: Area must be divisible by $3\times 8=24$; only 3456 is ($24\times 144$).

Answer: (D) 3456

Concept: For $a{x}^2+bx+c=0$, sum of roots $=-\frac{b}{a}$.

1. Here $a=7,b=-28,c=21$.
2. Sum $=-\frac{-28}{7}=4$.
3. Check: $7x^2-28x+21=7(x^2-4x+3)=7(x-1)(x-3)$, roots 1 and 3, sum 4.

Trick: Sum $=-\frac{b}{a}$, product $=\frac{c}{a}$.

Answer: (A) 4

Concept: Combined average $=\frac{\text{total sum}}{\text{total count}}$.

1. Sum of 12 students $=12\times 70=840$.
2. Rest $=18$ students, sum $=18\times 62=1116$.
3. Average $=\frac{840+1116}{30}=\frac{1956}{30}=65.2$.

Trick: Deviation method: $62+\frac{12\times 8}{30}=62+3.2=65.2$.

Answer: (C) 65.2