Science MCQs
Science MCQs offer a general overview of multiple scientific disciplines such as physics, chemistry, and biology. These questions are ideal for students, job seekers, and competitive exam candidates looking to enhance their scientific knowledge. Whether you're preparing for SSC, HSSC, or general job tests, these MCQs provide a mix of theoretical and practical science questions. This category is particularly useful for testing concepts related to laws of motion, periodic table, cell structure, human anatomy, electricity, and more. The MCQs are curated to support concept building and revision. They also help in developing problem-solving abilities and logical analysis skills, which are crucial in science-based exams.
Q: Protein found in hair and nails
A) Hemoglobin
B) Myosin
C) Elastin
D) Keratin
✅ Correct Answer: D
Explanation: Keratin is a tough, fibrous protein that strengthens hair and nails.
Q: Most reactive group of metals
A) Transition
B) Alkali
C) Lanthanides
D) Noble
✅ Correct Answer: B
Explanation: Alkali metals are highly reactive, especially with water.
Q: Energy stored in food
A) Chemical
B) Electrical
C) Nuclear
D) Mechanical
✅ Correct Answer: A
Explanation: Food contains chemical energy, released during digestion.
Q: Deficiency of Vitamin A affects
A) Vision
B) Teeth
C) Skin
D) Bones
✅ Correct Answer: A
Explanation: Vitamin A deficiency can cause vision problems including night blindness.
Q: Location of digestion initiation
A) Small intestine
B) Stomach
C) Liver
D) Mouth
✅ Correct Answer: D
Explanation: Digestion begins in the mouth with enzymes like amylase.
Q: Part of plant where photosynthesis occurs
A) Root
B) Flower
C) Stem
D) Leaf
✅ Correct Answer: D
Explanation: Photosynthesis mainly takes place in the chloroplasts of leaves.
Q: System coordinating body actions
A) Digestive
B) Circulatory
C) Respiratory
D) Nervous
✅ Correct Answer: D
Explanation: The nervous system transmits signals to coordinate bodily functions.