1. A
   It is an example of displacement reaction
2. B
   It is highly endothermic reaction
3. C
   $\text{Fe}_2\text{O}_3$ acts as oxidizing agent
4. D
   This reaction is applicable to joining of railway tracks

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1. A
   3-4-2-1
2. B
   4-2-1-3
3. C
   3-2-4-1
4. D
   4-1-2-3

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1. A
   Evaporation of petrol
2. B
   Dissolution of salt in water
3. C
   Storing of oxygen gas under pressure in a gas cylinder
4. D
   Burning of magnesium ribbon in air

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1. A
   Potassium
2. B
   Iron
3. C
   Calcium
4. D
   Sodium

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1. A
   Liquid, solid, gas
2. B
   Solid, solid, gas
3. C
   Liquid, solid, liquid
4. D
   Solid, liquid, gas

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1. A
   Mitosis and fertilization
2. B
   Meiosis and fertilization
3. C
   Mitosis and binary fission
4. D
   Meiosis and conjugation

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1. A
   Cell wall
2. B
   Plasma membrane
3. C
   Nucleic acid
4. D
   Mitochondria

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1. A
   Sugar
2. B
   Alcohol
3. C
   Saliva
4. D
   Teichoic acid

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1. A
   Both the gametes fuse with a single egg cell
2. B
   Both the gametes fuse with two different egg cells
3. C
   One gamete fuses with the egg cell and the other one eventually degenerate
4. D
   One gamete fuses with the egg cell and the other one fuses with a diploid secondary nucleus

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1. A
   Chromosome number increases but DNA content remains constant
2. B
   Both chromosome number and DNA content remains constant
3. C
   Chromosome number decreases but DNA content remains constant
4. D
   Both chromosome number and DNA content decreases

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1. A
   Faster development
2. B
   Pollination
3. C
   Quick germination of pollen
4. D
   Increase in size

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1. A
   Identifying with a variety of deities
2. B
   Assuming pompous titles
3. C
   Imposing high taxes
4. D
   Conquests and annexation of territories

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1. A
   The Bhakti movement avoided traditions that promoted diversity
2. B
   In northern India, the Bhakti movement revolved around the worship of Rama and Krishna
3. C
   The Bhakti movement relied on the devotion of God, both with and without attributes
4. D
   While Tulsidas represented the tradition of devotion with attributes, Sant Kabir followed the path of devotion without attributes

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1. A
   Bands of revolutionaries moving around to terrorise people who did not participate in the revolution
2. B
   The royal forces punishing people who participated in the revolution
3. C
   Trial and beheading persons considered enemies of the republic by the revolutionary tribunal
4. D
   The general atmosphere of insecurity perceived by people after the beheading of the king

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1. A
   From a continent of creditors it turned into a continent of debtors
2. B
   Soldiers came to be placed higher in social status than civilians
3. C
   Popular support decreased for conservative dictatorship which had come into being recently
4. D
   National honour occupied centre stage in the public sphere

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1. A
   Non Co-operation Movement
2. B
   Quit India Movement
3. C
   Individual Movement
4. D
   Civil Disobedience Movement

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1. A
   Bailadila : Iron Ore
2. B
   Zawar : Zinc
3. C
   Ghatsila : Copper
4. D
   Kudremukh : Bauxite

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1. A
   Centimeter
2. B
   Millibar
3. C
   Milligram
4. D
   Milliliter

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1. A
   Precambrian
2. B
   Mesozoic
3. C
   Cenozoic
4. D
   Paleozoic

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   Mesosphere
2. B
   Troposphere
3. C
   Thermosphere
4. D
   Stratosphere

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1. A
   Kerala
2. B
   Manipur
3. C
   Himachal Pradesh
4. D
   Uttarakhand

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1. A
   50 km/h
2. B
   60 km/h
3. C
   70 km/h
4. D
   80 km/h

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1. A
   A split-ring type commutator
2. B
   Slip rings and brushes
3. C
   A stronger magnetic field
4. D
   A rectangular wire loop

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1. A
   + 0·5 D
2. B
   − 0·5 D
3. C
   + 0·2 D
4. D
   − 0·2 D

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