Glassdoor users rated their interview experience at CSIR India as 100% positive with a difficulty rating score of 4 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Scientist and rated their interviews as the hardest, whereas interviews for Scientist and roles were rated as the easiest.
The hiring process at CSIR India takes an average of 360 days when considering 1 user submitted interviews across all job titles. Candidates applying for Scientist had the quickest hiring process (on average 360 days), whereas Scientist roles had the slowest hiring process (on average 360 days).
smooth and moderate, written test followed by an interview, read you dissertation, topic related basic idea of solution preparing, basic of your subject be confident while speaking they will see you all aspects of the induvial
Interview questions [1]
Question 1
Introduction, technical, topic oriented and dissertation
I applied online. I interviewed at CSIR India (Lucknow) in Nov 2025
Interview
It was quite long and nice have 2 rounds one of written and then followed by personal interview lasting from 45 min to 1 hour. Level is from hard to medium high level ask indept question.
I applied through university. I interviewed at CSIR India (Roorkee) in Jul 2025
Interview
Ask basic questions inIn Concrete Technology, everything hinges on the Water-Cement (w/c) Ratio. If it's too high, your concrete flows like soup (high workability) but results in a porous, weak structure once the excess water evaporates. The goal is to achieve Hydration, a chemical reaction, not just "drying." If you see Bleeding—water rising to the surface—you've likely over-vibrated or botched the mix, leading to a weak "laitance" layer that will flake off later.