RahulWBCS Mains Biology Cell Biology & Genetics Questions 2023 Q. Which is not a constituent of cell membrane?(A) Glycolipids(B) Phospholipids(C) Cholesterol(D) Proline Correct Answer: (D) Proline Q. In 2006, Nobel Prize for RNA Interference Phenomenon was won on the work carried out on(A) D. melanogaster(B) A. thaliana(C) C. elegans(D) S. pombe Correct Answer: (C) C. … Read more
WBCS Mains Biology Biotechnology Questions 2023 Q. Maximum application of animal cell culture technology today is in the production of(A) Insulin(B) Interferons(C) Edible proteins(D) Vaccines Correct Answer: (D) Vaccines Q. The following organism does not exhibit sexual reproduction(A) Bacteria(B) Cyanobacteria(C) Fungi(D) Algae Correct Answer: (B) Cyanobacteria Q. We keep food in a refrigerator to prevent … Read more
Preparing WBCS Chemistry Previous Year Questions (PYQs) is an effective way to understand the types of Chemistry questions asked in the West Bengal Civil Service (WBCS) Examination and identify important concepts for revision. This page brings together WBCS Prelims and Mains Chemistry PYQs in an organized, chapter-wise format. For WBCS Prelims, Chemistry questions are presented … Read more
WBCS Mains Chemistry Physical Chemistry, Electrochemistry Questions 2023 Q. Which one of the following is most likely to exhibit Tyndall effect?(A) Sugar and water mixture(B) Potash alum and water mixture(C) Chalk powder and water mixture(D) Potassium permanganate and water mixture Correct Answer: (C) Chalk powder and water mixture Q. Which transitions are studied by UV … Read more
WBCS Mains Chemistry Metallurgy, Alloys Questions 2022 Q. Minor gypsum is added to cement clinker during its grinding in order to(A) Increase the plasticity of the cement paste(B) Decrease the plasticity of the cement paste(C) Increase the plasticity and increase initial setting time of the cement paste(D) Reduce plasticity and quick setting of cement paste … Read more
WBCS Mains Chemistry Inorganic Chemistry & Acid-Base Questions 2023 Q. Which one of the following is not a metalloid?(A) Boron(B) Silicon(C) Gallium(D) Germanium Correct Answer: (C) Gallium Q. The usual pH of sea water ranges from(A) 7.5 – 8.5(B) 8.5 – 9.5(C) 9.5 – 10.5(D) 10.5 – 11.5 Correct Answer: (A) 7.5 – 8.5 Q. … Read more
WBCS Mains Chemistry Everyday & Environmental Chemistry Questions 2023 Q. These days HFC is replaced by which gas in refrigerator?(A) Toluene(B) Butane(C) Isobutane(D) Nitrobenzene Correct Answer: (C) Isobutane Q. The best quality coal is(A) Anthracite(B) Peat(C) Bituminous(D) Lignite Correct Answer: (A) Anthracite Q. Water is disinfected with(A) KMnO₄(B) Cl₂(C) Both(D) NO₂ Correct Answer: (B) Cl₂ … Read more
WBCS Mains Chemistry Atoms & Molecules Questions 2023 Q. Law of definite proportion is obeyed in(A) Stoichiometry(B) Electrometry(C) Photometry(D) Spectrometer Correct Answer: (A) Stoichiometry Q. Which structure has delocalized π electrons?(A) O₃(B) CO(C) HCN(D) CO₂ Correct Answer: (A) O₃ Q. Fullerene is made up of ______ carbon atoms(A) 100(B) 20(C) 75(D) 60 Correct Answer: (D) … Read more
WBCS Mains Chemistry Organic Chemistry & Biomolecules Questions 2023 Q. Triglycerides are broken down to(A) Fatty acids(B) Amino acids(C) Glycerol(D) Fatty acid and glycerol Correct Answer: (D) Fatty acid and glycerol Q. The element that is required for the synthesis of chlorophyll is(A) Mn(B) Fe(C) Mg(D) Mo Correct Answer: (C) Mg Q. Which of the … Read more
National Current Affairs From The Hindu 1. The Supreme Court invoked which Article of the Constitution to quash criminal cases registered against Gen Z protesters following the NEET-UG 2026 question paper leaks? A. Article 32B. Article 136C. Article 142D. Article 226 Answer: C. Article 142 Explanation: The Supreme Court invoked its extraordinary powers under Article … Read more