Explore a comprehensive collection of Science GK Questions (MCQs) for Competitive Exam. designed to help you prepare for competitive exams. Test your knowledge in subjects like Physics, Chemistry, Biology, and more with expertly curated questions to boost your exam readiness.
Q1. Where is the lacrimal gland located?
(A) In the stomach
(B) In the palms
(C) Oral cavity
(D) In the eye cavity
(D) In the eye cavity
Q2. Cosmic rays were discovered by-
(A) Bruno Rossi
(B) Copernicus
(C) Victor Hess
(D) Edwin Hubble
(C) Victor Hess
Q3. Which of the following contains ethanoic acid?
(A) Orange juice
(B) Tomato ketchup
(C) Lemon juice
(D) White vinegar
(D) White vinegar
Q4. Which of the following is a female hormone?
(A) Insulin
(B) Estrogen
(C) Androgen
(D) Oxygen
(B) Estrogen
Q5. The number of chambers in the human heart is-
(A) Four
(B) Two
(C) Five
(D) Three
(A) Four
Q6. What is the chemical composition of ‘heavy water’ (Guru Jal)?
(A) H2O2
(B) H₂O
(C) HDO
(D) D₂O
(D) D₂O
Q7. The function of pacemaker is-
(A) Start the heartbeat
(B) Regulation of urine formation
(C) Regulation of digestion process
(D) Initiation of breathing
(A) Start the heartbeat
Q8. Which of the following cells does not have a nucleus?
(A) Platelet
(B) Root hair cell
(C) Red blood cell
(D) Monocyte
(C) Red blood cell
Q9. Which one of the following cell organelles is semipermeable?
(A) Nucleus
(B) Plasma membrane
(C) Cytometry
(D) Cell membrane
(D) Cell membrane
Q10. A ship sailing on a river comes into the sea when the ship
(A) Will come down a little
(B) The level will be same as before
(C) Will rise slightly
(D) Up or down depending on the load placed on it.
(C) Will rise slightly