Correct Answer: A Dr. Rajendra Prasad was the first President of India, serving from 1950 to 1962.
Q2. General Knowledge
Which of the following rivers flows through the state of Rajasthan and is known as the 'Saraswati' of the west?
A. Sabarmati
B. Luni
C. Mahi
D. Chambal
Correct Answer: B Step 1: Identify which rivers flow through Rajasthan. The Luni originates in the Aravalli range near Ajmer and flows 495 km southwest through the Thar Desert before disappearing into the Rann of Kutch. Sabarmati flows through Gujarat, Mahi flows through Gujarat and Madhya Pradesh, and Chambal flows through MP and Rajasthan but joins the Yamuna in UP.
Shortcut Trick: Remember the acronym 'LRS' - Luni (Rajasthan), Saraswati (nickname). The word 'Luni' contains 'Lun' which sounds like 'run' - it runs through the desert of Rajasthan. The other options (Sabarmati, Mahi, Chambal) are all west-flowing rivers of Gujarat/tributaries - eliminate them.
Common Mistake: Many students confuse Luni with Chambal because both flow in Rajasthan. Remember: Chambal is a tributary of Yamuna (Ganga system), while Luni is a west-flowing river that ends in the desert.
Q3. Reasoning
In a certain code, 'LION' is written as '12-9-15-14'. How is 'TIGER' written in that code?
A. 20-9-7-5-18
B. 20-10-8-6-19
C. 19-8-6-4-17
D. 21-9-7-6-18
Correct Answer: A Step 1: Each letter is replaced by its position in the English alphabet (A=1, B=2, ..., Z=26).
Step 2: For 'LION': L=12, I=9, O=15, N=14 -> 12-9-15-14 OK
Step 3: For 'TIGER': T=20, I=9, G=7, E=5, R=18 -> 20-9-7-5-18
Shortcut Trick: Learn the shortcut positions using the mnemonic 'EJOTY' - E=5, J=10, O=15, T=20, Y=25. From these anchor points, you can quickly find any letter. T=20, then I is 11 letters back from T, G is 13 back, etc.
Alternative Method: Instead of counting from A each time, use the reverse: A=1, B=2, C=3... Z=26. Practice with common words: TIGER -> T(20)-I(9)-G(7)-E(5)-R(18).
Common Mistake: Many students forget to count correctly around the middle of the alphabet (M/N). Double-check: G comes after F(6), so G=7, not 8.
Q4. General Knowledge
Which article of the Indian Constitution grants the 'Right to Equality'?
A. Article 19
B. Article 14
C. Article 21
D. Article 32
Correct Answer: B Step 1: The Right to Equality is covered under Articles 14 to 18 of the Indian Constitution.
Step 2: Article 14 specifically states: 'The State shall not deny to any person equality before the law or the equal protection of the laws within the territory of India.'
Shortcut Trick: Remember the Fundamental Rights with the mnemonic '14-18 Equality, 19-22 Freedom, 23-24 Against Exploitation, 25-28 Religious Freedom, 29-30 Cultural, 32 Constitutional Remedies'. Article 14 = starting point of equality - think '14 = for Equality'.
Detailed Breakdown of Right to Equality:
- Article 14: Equality before law
- Article 15: Prohibition of discrimination
- Article 16: Equality of opportunity in public employment
- Article 17: Abolition of untouchability
- Article 18: Abolition of titles
Common Mistake: Articles 19, 21, and 32 are very famous but belong to different rights. Article 19 = Right to Freedom (speech, expression), Article 21 = Right to Life, Article 32 = Right to Constitutional Remedies (heart and soul of the Constitution per Dr. Ambedkar).
Q5. Science
What is the SI unit of electric current?
A. Volt
B. Ohm
C. Ampere
D. Watt
Correct Answer: C Step 1: The SI unit of electric current is the Ampere (symbol: A).
Step 2: 1 Ampere = flow of 1 Coulomb of charge per second through a conductor.
Shortcut Trick: Remember the SI units with the mnemonic 'VOW CA' - Volt (potential), Ohm (resistance), Watt (power) - and then Current = Ampere. Or simpler: 'Current is measured in Amps' -> 'A for Ampere, A for Amps'.
Complete SI Unit Table for Electricity:
- Current: Ampere (A)
- Potential Difference: Volt (V)
- Resistance: Ohm ()
- Power: Watt (W)
- Charge: Coulomb (C)
- Conductance: Siemens (S)
Common Mistake: 'Current is measured in Amperes' but many confuse it with Volts. Remember: Current = flow of electrons (Amps). Voltage = push/pull that causes flow (Volts). Think of a water pipe: current = water flow (Amps), voltage = water pressure (Volts).
Q6. Science
What is the process by which plants make their own food?
A. Respiration
B. Photosynthesis
C. Decomposition
D. Fermentation
Correct Answer: B Photosynthesis is the process by which plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy stored in glucose.
Q7. Mathematics
If a = 2, b = 3, and c = 4, what is the value of a^2 + b^2 + c^2?
A. 25
B. 27
C. 29
D. 35
Correct Answer: C Substituting the given values: a^2 + b^2 + c^2 = 2^2 + 3^2 + 4^2 = 4 + 9 + 16 = 29.
Q8. Reasoning
Pointing to a photograph, a man said, "I have no brother or sister, but that man's father is my father's son." Whose photograph was it?
A. His own son
B. His father
C. His uncle
D. His nephew
Correct Answer: A Step 1: The man says 'I have no brother or sister' -> He is an only child.
Step 2: 'my father's son' - Since he has no siblings, 'my father's son' can only be HIMSELF.
Step 3: So the statement 'that man's father is my father's son' becomes: 'that man's father is ME'.
Step 4: Therefore, the man in the photograph is the son of the speaker. The photograph is of his son.
Shortcut Trick - Family Tree Method:
Draw a simple tree:
Speaker (no siblings) <- father
Speaker (only child) = 'my father's son'
That man's father = Speaker
-> That man = Speaker's son OK
Alternative Approach - Substitute Yourself:
Replace 'my father's son' with 'me' (since no siblings). The sentence becomes: 'that man's father is me.' If I am someone's father, that someone must be my child. Answer: his son.
Common Mistake: Many overcomplicate this by introducing cousins or uncles. The key phrase 'no brother or sister' eliminates all possibilities except the speaker himself. Always simplify 'my father's son' to 'me' when the person has no siblings.
Q9. General Knowledge
The 'Thomas Cup' is associated with which sport?
A. Badminton
B. Tennis
C. Table Tennis
D. Golf
Correct Answer: A Step 1: The Thomas Cup is the World Men's Team Badminton Championship, first held in 1949.
Step 2: It is named after Sir George Thomas, a former President of the International Badminton Federation.
Shortcut Trick: Remember the sports trophies with this association trick:
- Thomas Cup -> Badminton (Men's) -> Think 'Tom' plays badminton
- Uber Cup -> Badminton (Women's)
- Davis Cup -> Tennis
- Swaythling Cup -> Table Tennis (World Team)
- Ryder Cup -> Golf
More Badminton Trophies:
- Thomas Cup: Men's international team
- Uber Cup: Women's international team
- Sudirman Cup: Mixed team world championship
Common Mistake: 'Thomas' sounds like a tennis name (Wimbledon has a 'Gentlemen's' trophy), but Thomas Cup is definitely badminton. Similarly, Davis Cup is tennis, not badminton.
Q10. Mathematics
What is the perimeter of a rectangle with a length of 6 cm and a width of 4 cm?
A. 16 cm
B. 18 cm
C. 20 cm
D. 22 cm
Correct Answer: C The perimeter of a rectangle is given by the formula: P = 2(length + width), P = 2(6 + 4), P = 2 * 10, P = 20 cm.
Q11. Science
Which gas is primarily responsible for the greenhouse effect?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Argon
Correct Answer: C Step 1: The greenhouse effect is caused by certain gases trapping heat in Earth's atmosphere. CO is the most significant human-emitted greenhouse gas.
Step 2: While water vapor is the most abundant natural greenhouse gas, CO is the primary driver of anthropogenic (human-caused) climate change.
Shortcut Trick: 'CO = Climate Offender x 2'. Remember the main greenhouse gases with 'COW-FAN': CO, O (ozone), Water vapor, F-gases, Aerosols, NO (nitrous oxide), CH (methane). CO is #1 culprit because it stays in the atmosphere for 300-1000 years.
Key Composition of Atmosphere:
- Nitrogen (N): ~78% - NOT a greenhouse gas
- Oxygen (O): ~21% - NOT a greenhouse gas
- Argon (Ar): ~0.93% - NOT a greenhouse gas
- CO: ~0.04% - though tiny, it's the PRIMARY greenhouse gas due to its heat-trapping ability
Common Mistake: Students think oxygen or nitrogen cause the greenhouse effect since they make up 99% of the atmosphere. But greenhouse gases are trace gases that absorb and emit infrared radiation. O and N are transparent to infrared - they don't trap heat.
Q12. General Knowledge
Who was the first Indian woman to win a medal at the Olympics?
A. P.T. Usha
B. Saina Nehwal
C. Mary Kom
D. Karnam Malleswari
Correct Answer: D Step 1: Karnam Malleswari won a bronze medal in weightlifting (69 kg category) at the 2000 Sydney Olympics.
Step 2: This made her the first Indian woman to win an Olympic medal.
Shortcut Trick: 'Malleswari' contains 'Mall' - think 'Mall-e-s-wari, Medal-e-First-wari'. Connect: Weightlifter -> heavy weights -> first woman to carry India's medal hopes. Also remember 2000 Sydney - the millennium Olympics.
Timeline for Indian Women at Olympics:
- 2000: Karnam Malleswari (Weightlifting) - FIRST ever
- 2012: Saina Nehwal (Badminton bronze)
- 2012: Mary Kom (Boxing bronze)
- 2016: P.V. Sindhu (Badminton silver)
- 2020: Mirabai Chanu (Weightlifting silver)
Common Mistake: Many confuse P.T. Usha ('Payyoli Express') as an Olympic medalist. She came 4th in 1984 by 1/100th of a second - famously missed the bronze!
Q13. Science
What is the process called when an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic Drift
C. Hereditary
D. Evolution
Correct Answer: C Hereditary refers to the passing of traits or genetic information from parents to their offspring through the transmission of genetic information.
Q14. Science
What is the largest planet in our solar system?
A. Earth
B. Saturn
C. Jupiter
D. Uranus
Correct Answer: C Jupiter is the largest of all the planets in terms of both mass and size, with a diameter of approximately 142,984 kilometers.
Q15. Mathematics
What is the value of sin(30 degrees)?
A. 1/2
B. 1
C. 0
D. -1
Correct Answer: A The sine of 30 degrees is 1/2 or 0.5.