Question 1

What is the Rubber Board of India and what does a Scientific Assistant do?

Accepted Answer

The Rubber Board of India is a statutory body under the Ministry of Commerce and Industry, established under the Rubber Act 1947, with its headquarters in Kottayam, Kerala. It promotes cultivation, production, processing, and marketing of natural rubber and rubber products. India is the fourth largest producer of natural rubber globally, with most cultivation in Kerala, Karnataka, and North-East India. A Scientific Assistant conducts research on rubber cultivation practices, plant nutrition, disease management, new clone performance, processing quality, and supports the technology transfer division that trains rubber growers.

Question 2

What Botany topics are most important for Rubber Board exam?

Accepted Answer

Botany topics relevant to Rubber Board exam include Hevea brasiliensis (para rubber plant) taxonomy, physiology, and agronomy; latex biosynthesis and tapping systems; clonal selection in rubber; plant diseases affecting rubber (SALB – South American Leaf Blight, Phytophthora leaf fall, pink disease, white root disease) and their management; tropical plantation crop agronomy; soil requirements for rubber cultivation; shade tree management in rubber gardens; and growth regulators (ethephon) use in rubber tapping stimulation. General botany topics like cell biology, plant physiology, and taxonomy are also tested.

Question 3

What is the processing and grading system for natural rubber?

Accepted Answer

Natural rubber in India is graded under the Rubber Rules 1955 into grades like RSS (Ribbed Smoked Sheet – RSS 1 to RSS 5), ISNR (Indian Standard Natural Rubber), Crepe rubber, and specialty rubbers. Processing involves coagulation of latex using formic acid, milling through rollers to form sheets, smoking in smoke houses (RSS) or air drying (pale crepe), and grading based on visual defects. Understanding these processing steps, quality standards, and the role of Rubber Board in certifying grading centres is important for the Scientific Assistant role.

Question 4

What Chemistry topics are covered in the Rubber Board exam?

Accepted Answer

The Chemistry section covers organic chemistry relevant to rubber — polymer chemistry, vulcanisation process (sulphur crosslinking of polyisoprene chains), rubber compounding ingredients (accelerators, antioxidants, fillers, plasticisers), latex chemistry (colloidal chemistry, stabilisation, centrifugation), and chemical analysis methods for rubber quality testing (plasticity, viscosity, Mooney viscometer readings, dirt content, volatile matter, ash content). Physical chemistry topics like thermodynamics, equilibrium, and electrochemistry from Class 12 level are also relevant.

Question 5

What is the salary and job location for Rubber Board Scientific Assistants?

Accepted Answer

Rubber Board Scientific Assistants are Group C government employees in CDA pay scale with a starting pay around Rs. 35,400–1,12,400 per month plus DA, HRA, and other allowances. Most postings are in Kerala (Kottayam headquarters, research stations in Rubber Research Institute of India – RRII at Kottayam, and field stations), with some positions in Karnataka, Tripura, and Assam which are growing rubber cultivation regions. The position provides government job stability, opportunities for research publications, and exposure to tropical plantation crop science.

Subject	Questions	Correct Answer Pattern	Difficulty
Botany & Agriculture	25	Mixed (A/B/C/D)	Moderate
Chemistry	25	Mixed (A/B/C/D)	Moderate
General Studies	25	Mixed (A/B/C/D)	Moderate
Reasoning Ability	25	Mixed (A/B/C/D)	Moderate

Rubber Board Scientific Assistant Answer Key 2027 — Official & Expected

Answer Key Release Timeline

How to Download Official Answer Key

Expected Answer Key — Subject-wise Breakdown

Expected Score Calculator

How to Challenge Wrong Answers

Download Objection Form

Pay Challenge Fee

Submit with Proof

Await Resolution

Frequently Asked Questions

Prepare for Rubber Board Scientific Assistant with Full Mock Tests