1. A
   Thomas Jones Barker
2. B
   Joseph Noel Paton
3. C
   Thomas Daniell
4. D
   Charles D'Oyly

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1. A
   Current electricity
2. B
   Static electricity
3. C
   Magnetic field
4. D
   Gravitational field

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1. A
   330 m/s
2. B
   800 m/s
3. C
   1500 m/s
4. D
   5000 m/s

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1. A
   25°C
2. B
   37°C
3. C
   500°C
4. D
   1500°C

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1. A
   $R$
2. B
   $2R$
3. C
   $R/4$
4. D
   $R/8$

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1. A
   Nuclear fusion
2. B
   Controlled nuclear fusion
3. C
   Uncontrolled nuclear fission
4. D
   Controlled nuclear fission

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1. A
   Iron is the reducing agent
2. B
   The solution turns green in colour after the reaction
3. C
   Copper is a more reactive metal than iron
4. D
   The reaction is an example of a redox reaction

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1. A
   Hydrochloric acid
2. B
   Nitric acid
3. C
   Acetic acid
4. D
   Sulphuric acid

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1. A
   the reaction requires initiation by a catalyst
2. B
   oxides of nitrogen are unstable
3. C
   the reaction is endothermic and requires very high temperature
4. D
   the stoichiometry of $\text{N}_2$ and $\text{O}_2$ in air is not ideal for the reaction to take place

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1. A
   Max Planck
2. B
   Albert Einstein
3. C
   Neils Bohr
4. D
   Ernest Rutherford

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1. A
   45
2. B
   63
3. C
   90
4. D
   126

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1. A
   Periyar
2. B
   Bharatpuzha
3. C
   Pamba
4. D
   Tamraparni

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1. A
   Tista
2. B
   Jhelum
3. C
   Tungabhadra
4. D
   Bharatpuzha

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1. A
   Saraswati
2. B
   Bhagirathi
3. C
   Kali
4. D
   Pindar

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1. A
   Bullet train project
2. B
   Agriculture development
3. C
   Women empowerment
4. D
   Full immunization

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1. A
   1 and 2 only
2. B
   1 and 3 only
3. C
   1, 2 and 3
4. D
   3 only

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1. A
   Gordon Johnson
2. B
   David Arnold
3. C
   F G Hutchins
4. D
   Peter Robb

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1. A
   $P = 2P_1$
2. B
   $P = P_1/2$
3. C
   $P = 4P_1$
4. D
   $P = P_1$

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1. A
   1, 2 and 3
2. B
   1 and 3 only
3. C
   2 and 3 only
4. D
   1 and 2 only

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1. A
   very large distances
2. B
   time interval in years
3. C
   amount of light received on earth in a year
4. D
   mass of atoms

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1. A
   12.5 cm
2. B
   5 cm
3. C
   2 cm
4. D
   10 cm

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1. A
   Frictional force
2. B
   Electric force
3. C
   Gravitational force
4. D
   Mechanical force

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