RRB ALP CBT 1 2025 PYQs

Concept: Identify the highest and lowest numbers.

1. Highest = 852 → second digit 5
2. Lowest = 429 → second digit 2
3. 5 + 2 = 7

Short trick: Compare only the hundreds digits: 8 is highest, 4 is lowest (two 4s: 429 < 452).

Answer: (D) 7

Concept: Look for the pattern vowel–CONSONANT–vowel.

1. Vowels: U, A, A, E, A, U, E, U.
2. Check each consonant between two vowels: …U P E… ✓
3. L (U L H), G (E G H), J (A J Z), G (X G U), P (U P H) fail.
4. Only one: P.

Short trick: Look for a single consonant with vowels on both sides — scan around the vowel clusters only.

Answer: (D) 1

Concept: Take A = (0, 0), east = +x, north = +y.

1. 23 km south → (0, −23); left (east) 14 → (14, −23)
2. Left (north) 27 → (14, 4); left (west) 23 → (−9, 4)
3. Left (south) 4 → P = (−9, 0)
4. P is 9 km west of A ⇒ drive 9 km to the east.

Short trick: Net N–S: −23 + 27 − 4 = 0; net E–W: 14 − 23 = −9 (west). So go 9 km east.

Answer: (C) 9 km to the east

Concept: Letters common to both words share the common digits.

1. HASP = 8294, ASHY = 2879
2. Common letters H, A, S ↔ common digits 8, 2, 9
3. Leftover: P = 4 (first word), Y = 7 (second word)

Short trick: Strike out common digits 2, 8, 9 from 2879 → 7 is left for Y.

Answer: (C) 7

Concept: Look for the pattern letter–LETTER–symbol.

1. U Q £ ✓
2. H B $ ✓
3. I Q # ✓
4. Others fail (e.g. M ©: M preceded by *; V €: V preceded by ©).

Short trick: Find every letter pair (UQ, HB, IQ, UX) and check whether a symbol follows the second letter: UQ£, HB$, IQ# — 3 (UX is at the end).

Answer: (B) 3

Concept: Place the 3-day block Devansh–Bhanu–Ekansh first.

1. Chetu = Friday. D, B, E are consecutive and D ≠ Monday.
2. Free days: Mon–Thu, Sat, Sun. A 3-day block fits only in Mon–Wed or Tue–Thu ⇒ D = Tue, B = Wed, E = Thu.
3. Gyanu–Falak are consecutive ⇒ Sat–Sun. Abhi gets Monday.

4. Mon	Tue	Wed	Thu	Fri	Sat	Sun
   Abhi	Devansh	Bhanu	Ekansh	Chetu	Gyanu	Falak

Short trick: Friday splits the week into Mon–Thu (4 days) and Sat–Sun (2 days); the 3-block takes Tue–Thu, the 2-block Sat–Sun, leaving Monday.

Answer: (D) Monday

Concept: Check each statement alone, then together.

1. (I) alone: A < B < C; Deepa unknown ✗
2. (II) alone: B < D < C; Ankita unknown ✗
3. Together: A < B < D < C ⇒ Chitra scored the highest ✓

Short trick: Each statement leaves one student unplaced; together all four are ranked under Chitra.

Answer: (B) Data in both statements I and II together (and not statement I alone or statement II alone) are sufficient to answer the question

Concept: Start with "no one above G".

1. G = 6; two between G and S ⇒ S = 3.
2. H below S but above P ⇒ H = 2, P = 1.
3. Two between Y and H ⇒ Y = 5; A = 4.

4. 6	5	4	3	2	1
   G	Y	A	S	H	P

5. Below A (4): S, H, P = 3 persons.

Short trick: G at top fixes S = 3, and H–P must squeeze into floors 2–1 below S.

Answer: (A) Three

Concept: Letters common to both words share the common digits.

1. BREW = 8135, WEAR = 3915
2. Common letters R, E, W ↔ common digits 1, 3, 5
3. Leftover: B = 8, A = 9

Short trick: Strike out 1, 3, 5 from 3915 → 9 is left for A.

Answer: (D) 9

Concept: Find the shift for each position.

1. 	1st	2nd	3rd	4th
   NLOR → RHKN	+4	−4	−4	−4
   IQCS → MMYO	+4	−4	−4	−4
   JPZK → NLVG	+4	−4	−4	−4 ✓

Short trick: Rule +4, −4, −4, −4. X→C is +5 (D out); H→E is −3 (C out); T→Q is −3 (A out) — only JPZK : NLVG survives.

Answer: (B) JPZK : NLVG

Concept: In an onion-peel mount stained with safranin/iodine, the nucleus and cell wall take up the stain strongly, the cytoplasm only faintly.

1. The nucleus is rich in DNA/chromatin and stains dark.
2. The cytoplasm is mostly water with few stain-binding materials, so it is very lightly stained.
3. Hence cytoplasm: very little stained.

Short trick: Memory hook: "Nucleus dark, cytoplasm light" — the nucleus looks like a dark dot in a pale cell.

Answer: (A) Very little stained

Concept: Spectacle lenses bend (refract) light so that the image falls exactly on the retina.

1. Myopia: concave (diverging) lens; hypermetropia: convex (converging) lens.
2. Both work by refraction of light through the lens, not by reflection, scattering or dispersion.

Short trick: Memory hook: "Lens → Refraction, Mirror → Reflection".

Answer: (D) Refraction of light through lenses

Concept: Lymph (tissue fluid) is plasma that has leaked out of capillaries into intercellular spaces.

1. Plasma proteins and RBCs are too large to pass through capillary walls easily, so lymph is colourless and has less protein.
2. It flows in lymphatic vessels (not arteries) and carries fats from the intestine; contains lymphocytes.

Short trick: Memory hook: "Lymph = Light plasma" — colourless, less protein, no RBC.

Answer: (D) Similar to plasma but colourless and low in proteins

Concept: A concave lens is diverging: refracted rays spread out and only appear to meet on the object’s side.

1. A ray parallel to the axis diverges as if coming from F₁; a ray through the optical centre goes straight.
2. These rays, extended backwards, meet between F₁ and the lens.
3. So the image is always virtual, erect and diminished, for every object position.

Short trick: Memory hook: "Concave lens = convex mirror" — both always give a virtual, erect, small image.

Answer: (B) Virtual, erect, and diminished

Concept: Ethanol is the active ingredient of alcoholic drinks (NCERT Class 10).

1. Small quantities of dilute ethanol cause drunkenness.
2. Even a small quantity of pure ethanol (absolute alcohol) can be lethal.
3. Long-term consumption of alcohol leads to many health problems.

Short trick: Memory hook: "Dilute → drunk, Absolute → deadly".

Answer: (B) Small amounts of dilute ethanol cause drunkenness, whereas absolute alcohol can be lethal

Concept: Evaporation needs latent heat, which is taken from the surroundings.

1. Acetone is highly volatile and evaporates quickly.
2. Its particles absorb energy (latent heat of vaporisation) from the palm to escape as vapour.
3. The palm loses heat and feels cool.

Short trick: Memory hook: "Evaporation steals heat" — same reason sweat or a matka cools.

Answer: (B) Particles absorb energy from the palm and evaporate.

Concept: Starting from rest: $h=\frac{1}{2}g{t}^2$.

1. $h=\frac{1}{2}\times 10\times (0.8{)}^2$
2. $=5\times 0.64=3.2$ m

Short trick: With g = 10, $h=5t^2$: $5\times 0.64=3.2$.

Answer: (D) 3.2 m

Concept: Hybridisation = crossing genetically dissimilar plants (NCERT Class 9).

1. The crosses used for crop improvement are intervarietal (between varieties), interspecific (between species of the same genus) and intergeneric (between genera).
2. "Intraspecific" is not listed among these hybridisation types.

Short trick: Memory hook: "Varieties – Species – Genera" (V-S-G) are the three crosses; intra- is not in the list.

Answer: (B) Intraspecific

Concept: The Digital Personal Data Protection (DPDP) Rules, 2025 were notified to operationalise the Digital Personal Data Protection Act, 2023.

1. The DPDP Act, 2023 sets out rights of data principals and duties of data fiduciaries and creates the Data Protection Board of India.
2. The Rules, 2025 give the procedures (consent managers, breach intimation, Board functioning) needed to implement the Act.

Short trick: Rules always carry the same name as their parent Act: DPDP Rules → DPDP Act, 2023.

Answer: (A) Digital Personal Data Protection Act, 2023

Concept: Judicial review is the power of courts to examine whether a law is consistent with the Constitution.

1. Articles 13, 32 and 226 empower the Supreme Court (and High Courts) to strike down unconstitutional laws.
2. The Supreme Court is the final interpreter and guardian of the Constitution, so it finally decides constitutional validity.

Short trick: Memory hook: "Parliament makes, Executive implements, Supreme Court reviews".

Answer: (B) The Supreme Court of India through judicial review