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1. A
   $\theta = \sin^{-1}(1/9\cdot8)$
2. B
   $\theta = \sin^{-1}(1/20)$
3. C
   $\theta = \sin^{-1}(1/80)$
4. D
   $\theta = \sin^{-1}(1/100)$

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1. A
   $0\cdot8 \times 10^{-5}$ K$^{-1}$
2. B
   $2\cdot4 \times 10^{-5}$ K$^{-1}$
3. C
   $3\cdot2 \times 10^{-5}$ K$^{-1}$
4. D
   $4\cdot8 \times 10^{-5}$ K$^{-1}$

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1. A
   $v_1$ is 1·5 times $v_2$.
2. B
   $v_2$ is 1·5 times $v_1$.
3. C
   $v_1$ is equal to $v_2$.
4. D
   $v_1$ is 3 times $v_2$.

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1. A
   Chlorofluorocarbon
2. B
   Nitrous oxide
3. C
   Carbon dioxide
4. D
   Methane

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

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

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1. A
   Mizoram—Manipur—Tripura—Meghalaya
2. B
   Tripura—Manipur—Meghalaya—Mizoram
3. C
   Meghalaya—Manipur—Mizoram—Tripura
4. D
   Manipur—Meghalaya—Tripura—Mizoram

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1. A
   Pretoria
2. B
   Saskatchewan
3. C
   Perth
4. D
   Buenos Aires

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1. A
   Solution
2. B
   Carbonation
3. C
   Oxidation
4. D
   Exfoliation

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1. A
   Its focal length is zero.
2. B
   The size of the image of an object placed in front of the mirror is slightly less than that of the object.
3. C
   The image is virtual, erect and laterally inverted.
4. D
   Its focal length is 200 cm.

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1. A
   It will never form an inverted image.
2. B
   The image moves towards the focus when the object moves towards the mirror.
3. C
   Depending on the position of the object with respect to the mirror, the image can be inverted and real.
4. D
   The size of the image becomes larger than that of the object when the object is placed at a distance equal to half the focal length.

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1. A
   0·05 tesla
2. B
   0·2 tesla
3. C
   0·4 tesla
4. D
   0·8 tesla

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1. A
   Right to equality
2. B
   Right to freedom
3. C
   Right to citizenship
4. D
   Right against exploitation

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1. A
   Opium
2. B
   Coffee
3. C
   Betel leaf
4. D
   Chili

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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
   Shankara : Avadhuta
2. B
   Ramananda : Kevaladvaita
3. C
   Ramanuja : Vishishtadvaita
4. D
   Chaitanya : Advaita

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1. A
   1763
2. B
   1764
3. C
   1765
4. D
   1766

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1. A
   Nikitin
2. B
   Fa-Hien
3. C
   Bernier
4. D
   Nicolo Conti

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1. A
   Calicut
2. B
   Surat
3. C
   Pondicherry
4. D
   Masulipatnam

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1. A
   Santhanam Committee
2. B
   Dinesh Goswami Committee
3. C
   Tarkunde Committee
4. D
   Narasimham Committee

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

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1. A
   Fuleco
2. B
   Zakumi
3. C
   Pille
4. D
   Zabivaka

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1. A
   Chhattisgarh
2. B
   Manipur
3. C
   Kerala
4. D
   West Bengal

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1. A
   Singapore
2. B
   China
3. C
   Australia
4. D
   Sri Lanka

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1. A
   North-South Corridor Project
2. B
   Belt and Road Initiative
3. C
   Chabahar Port
4. D
   Panama Canal Expansion

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