Kerala PSC Previous Years Question Paper & Answer

Title : Assistant Scientist in Kerala State Pollution Control Board
Question Code : A

Page:7


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Assistant Scientist in Kerala State Pollution Control Board' And exam conducted in the year 2023. And Question paper code was '096/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 7 out of 16
Excerpt of Question Code: 096/2023

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096/23

Hydrogen can be used as biofuel and can be produced directly using sugars and
fatty acids by

A) Chlamydomonas B) Clostridium
C) Saccharomycetes D) Trichoderma

One gene one enzyme hypothesis is proposed by
A) Frederick Griffith B) Beadle and Tatum
C) Sanger D) Lederberg and Tatum

In Bioreactors

i. Aeration system is one of the very important parts of a fermentor.
ii. Impeller can reduce proper aeration.

iii. Impeller blades helps to reduce the size of air bubbles.

iv. A foam-controlling device is mounted on top of the fermentor to control
contamination.

A) iand ii are correct B) i and iii are correct
C) iand iii are incorrect D) i and iv are incorrect

Methods for removal of marker genes in transgenic plants
A) Co transformation and site specific recombination
B) Transplastomics and gene silencing
C) Poly cation treatment and RNA interference
)

D) None of these

Nutritional edible mushrooms

i. Volvariella volvacea and Agaricus bisporus

ர்‌. Flammulina velutipes and Lentinula edodes
iii. Boletus edulis and Lentinula edodes
iv. Volvariella volvacea and Auricularia heimuer
A) iand ii B) ii and iii C) ii andiv D) i, ii, iii and iv
X-ray diffraction
A
B

D

Acts as an atomic microscope
A nondestructive technique
To determine the three-dimensional structure of crystals

All of these

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