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1. A
   $\text{CH}_3(\text{CH}_2)_{10}\text{CH}_2\text{O SO}_3^-\text{Na}^+$
2. B
   $[\text{CH}_3(\text{CH}_2)_{15}-\text{N}-(\text{CH}_3)_3]^+\text{Br}^-$
3. C
   $\text{CH}_3(\text{CH}_2)_{16}\text{COO}^-\text{Na}^+$
4. D
   $\text{CH}_3(\text{CH}_2)_{16}\text{COO}(\text{CH}_2\text{CH}_2\text{O})_n\text{CH}_2\text{CH}_2\text{OH}$

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1. A
   Coke
2. B
   Propane
3. C
   Petrol
4. D
   Wax

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1. A
   Calcium (Ca)
2. B
   Potassium (K)
3. C
   Magnesium (Mg)
4. D
   Sodium (Na)

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1. A
   $\text{Mg}^{2+}$, Ar
2. B
   $\text{Na}^+$, $\text{O}^{2-}$
3. C
   $\text{Al}^{3+}$, $\text{Cl}^-$
4. D
   $\text{K}^+$, Ne

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1. A
   Titanium dioxide
2. B
   Novolac
3. C
   Phthalocyanine
4. D
   Silicones

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1. A
   Air mass forms either in tropical or in polar region
2. B
   Air mass develops on continents as well as over ocean
3. C
   Air mass develops in a cyclonic condition
4. D
   Air mass changes the weather conditions

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1. A
   New Delhi
2. B
   Kolkata
3. C
   Pune
4. D
   Chennai

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1. A
   Australia
2. B
   Central Africa
3. C
   South America
4. D
   East Asia

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1. A
   Adelaide
2. B
   Darwin
3. C
   Hobart
4. D
   Brisbane

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1. A
   East Asia
2. B
   West Coast of Africa
3. C
   Sahara of Africa
4. D
   Mesopotamia

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1. A
   Orographic rainfall
2. B
   Convectional rainfall
3. C
   Cyclonic rainfall (Tropical)
4. D
   Cyclonic rainfall (Temperate)

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1. A
   Charles Grant
2. B
   John Stuart Mill
3. C
   James Mill
4. D
   William Jones

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1. A
   Hindu-Muslim divide
2. B
   Support to the English Government
3. C
   The return of the Badshahi
4. D
   The imposition of heavy Jumas (revenue demand)

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1. A
   Lord Irwin
2. B
   Lord Wavell
3. C
   Lord Mountbatten
4. D
   Lord Willingdon

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1. A
   Ghanshyam Das Birla
2. B
   Ambalal Sarabhai
3. C
   Sir Biren Mookerjee
4. D
   T. T. K. Krishnamachari

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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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