RRB NTPC Undergraduate CBT 1 3 Sept 2025 Shift 3 – Question Paper

Concept: Cryogenic (very low temperature, about $-{196}^{\circ }\text{C}$ in liquid nitrogen) storage keeps seeds and plant tissue alive for decades, helping save endangered plant species.

1. In February 2025 the Tamil Nadu government launched a cryogenic preservation facility for endangered and rare plant species of the State.
2. It stores germplasm (seeds, tissues) so that threatened native plants can be regenerated later.
3. Kerala, Karnataka and Telangana were not the States in this news.

Yaad rakhein: Cryo + plants + Feb 2025 → Tamil Nadu.

Answer: (D) Tamil Nadu

Concept: Check each option by division or divisibility rules.

1. $20$: number must end in $0$ – $726179$ ends in $9$, so no. $28$: an odd number cannot be divisible by $28$.
2. $726179÷23$: $23\times 31573=631460+94719=726179$, remainder $0$.
3. $726179÷29$ leaves remainder $29\times 25040=726160$, $726179-726160=19\ne 0$.

Trick: Odd number → strike out every even divisor first ($28$, $20$), then test only $23$ and $29$.

Answer: (A) $23$

Concept: Write the alphabet positions and check the gaps between the letters.

1. HPJ: H(8) → P(16) is +8, P → J(10) is −6
2. KSM: 11 → 19 (+8) → 13 (−6); NVP: 14 → 22 (+8) → 16 (−6)
3. QYR: 17 → 25 (+8) → 18 (−7) — breaks the pattern

Trick: Pattern +8, −6 also means 3rd letter = 1st + 2; Q + 2 = S, not R.

Answer: (B) QYR