Q1. The focal length of a spherical mirror of radius of curvature 20 cm is:
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Answer: B. 10 cm
f = 20/2 = 10 cm.
SSC CGL General Awareness Beginner Practice Set 7
25 beginner questions. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Physics - Light, Chemistry - Everyday Chemistry, Biology - Circulatory System, Physics - Solar System & Space, Biology - Nervous System, Books & Authors, National Symbols, Freedom Struggle, Chemistry - Atoms & Molecules, Economy, Biology - Cell & Tissues, Physics - Units & Measurement, Chemistry - Acids, Bases & Salts, Modern History, Physics - Electricity, Biology - Diseases, Biology - Skeletal System, Ancient History, Indian Geography, Awards
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Q2. The main raw material used for making glass is:
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Answer: A. Silica (sand)
Silica, SiO2 (sand), is the main ingredient of glass.
Q3. Which blood components help in clotting of blood?
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Answer: C. Platelets
Platelets (thrombocytes) help form clots and stop bleeding at wounds.
Q4. The largest planet in our solar system is:
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Answer: C. Jupiter
Jupiter is the largest planet in the solar system.
Q5. Which is the largest part of the human brain?
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Answer: C. Cerebrum
The cerebrum is the largest part of the brain and controls thinking, memory and voluntary actions.
Q6. 'Wings of Fire' is the autobiography of:
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Answer: B. Dr. A. P. J. Abdul Kalam
'Wings of Fire' is the autobiography of Dr. A. P. J. Abdul Kalam, the 'Missile Man' and former President.
Q7. Which bird is the National Bird of India?
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Answer: A. Indian Peacock
The Indian Peacock (Peafowl) is the National Bird of India, protected under the Wildlife (Protection) Act.
Q8. Which planet is closest to the Sun?
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Answer: C. Mercury
Mercury is the innermost planet of the solar system.
Q9. Gandhi called off the Non-Cooperation Movement in 1922 after which incident?
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Answer: B. Chauri Chaura
Gandhi withdrew the Non-Cooperation Movement after a mob burned a police station at Chauri Chaura in February 1922.
Q10. What is the chemical formula of calcium chloride?
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Answer: C. CaCl2
Calcium (valency 2) combines with two chlorine atoms (valency 1) to form CaCl2.
Q11. MGNREGA guarantees how many days of wage employment in a year to a rural household?
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Answer: A. 100 days
MGNREGA guarantees at least 100 days of wage employment a year to adult members of a rural household.
Q12. How many chromosomes are present in a normal human body (somatic) cell?
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Answer: D. 46
A normal human somatic cell has 46 chromosomes, arranged as 23 pairs.
Q13. Which cell organelle is commonly called the 'powerhouse of the cell'?
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Answer: C. Mitochondria
Mitochondria are called the powerhouse because they produce ATP through cellular respiration.
Q14. What is the SI unit of force?
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Answer: D. Newton
The SI unit of force is the newton (N), equal to 1 kg m/s².
Q15. The pH of a neutral solution at room temperature is:
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Answer: A. 7
A neutral solution such as pure water has pH 7.
Q16. In the Battle of Plassey (1757), Robert Clive defeated:
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Answer: C. Siraj-ud-Daulah
At Plassey in 1757, Robert Clive defeated Siraj-ud-Daulah, the Nawab of Bengal, helped by Mir Jafar's betrayal.
Q17. The speed of light in vacuum is approximately:
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Answer: A. 3 × 10^8 m/s
Light travels at about 3 × 10^8 m/s in vacuum.
Q18. Household electrical appliances in India are connected in:
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Answer: C. Parallel
In parallel, each appliance gets the same voltage and can be switched on/off independently.
Q19. Which tree is the National Tree of India?
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Answer: A. Banyan
The Banyan (Ficus benghalensis) is the National Tree of India.
Q20. Malaria is transmitted by the bite of the:
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Answer: D. Female Anopheles mosquito
The female Anopheles mosquito carries Plasmodium and spreads malaria.
Q21. How many bones are present in the skeleton of an adult human?
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Answer: D. 206
An adult human skeleton has 206 bones.
Q22. Sangam literature of ancient South India was written in which language?
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Answer: B. Tamil
Sangam literature is the earliest body of Tamil literature. It is linked with poets' assemblies held under Pandya patronage.
Q23. Black soil, also called 'Regur', is best suited for growing which crop?
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Answer: B. Cotton
Black (regur) soil retains moisture well and is ideal for cotton, hence it is also called black cotton soil.
Q24. The astronomical and mathematical work 'Aryabhatiya' was written by:
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Answer: B. Aryabhata
The Aryabhatiya was written by the mathematician-astronomer Aryabhata in the Gupta period.
Q25. The Dadasaheb Phalke Award is given for outstanding contribution to:
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Answer: B. Indian cinema
The Dadasaheb Phalke Award is India's highest award in cinema, named after the father of Indian cinema.