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Question 391

AP Police SI 2018• Test

Observe the following list and match correct combinations.

List - AList - B
(A)Concentrated organic manureI)Blue green algae
(B)Macro organic manureII)Super phosphate
(C)Green manureIII)Neem seeds powder
(D)Farmer friendly fertilizersIV)Lobia
(E)Chemical fertilizerV)Animal excreta
  1. AOption (a)

    A - III, B - I, C - V, D - IV, E - II

  2. BOption (b)

    A - III, B - V, C - I, D - IV, E - II

  3. COption (c)

    A - III, B - V, C - IV, D - I, E - II

  4. DOption (d)

    A - III, B - II, C - V, D - I, E - IV

View answer & explanation

Correct answer

Answer: (a)A.

A - III, B - I, C - V, D - IV, E - II

Explanation not yet available.

Question 392

AP Police SI 2018• Test

Identify the species which acts only as a reducing agent among the following.

  1. AOption (a)

    KMnO4

  2. BOption (b)

    O3

  3. COption (c)

    H2O2

  4. DOption (d)

    H2S

View answer & explanation

Correct answer

Answer: (a)A.

KMnO4

Explanation not yet available.

Question 393

AP Police SI 2018• Test

The angular momentum of the electron in 3d orbital is equal to

  1. AOption (a)

    0

  2. BOption (b)

    \(\sqrt{12} \frac{h}{2 \pi}\)

  3. COption (c)

    \(\sqrt{6} \frac{h}{2 \pi}\)

  4. DOption (d)

    \( \frac{h}{ \sqrt 2 \pi}\)

View answer & explanation

Correct answer

Answer: (a)A.

0

Explanation not yet available.

Question 394

AP Police SI 2018• Test

Which one of the following is not a carboxylic acid? 

  1. AOption (a)

    Picric acid

  2. BOption (b)

    Tartaric acid

  3. COption (c)

    Citric acid

  4. DOption (d)

    Maleic acid

View answer & explanation

Correct answer

Answer: (a)A.

Picric acid

Explanation not yet available.

Question 395

AP Police SI 2018• Test

The oxide of nitrogen which is acidic as well as paramagnetic in nature is  

  1. AOption (a)

    N2O

  2. BOption (b)

    NO

  3. COption (c)

    NO2

  4. DOption (d)

    N2O5

View answer & explanation

Correct answer

Answer: (a)A.

N2O

Explanation not yet available.

Question 396

AP Police SI 2018• Test

Catalytic hydrogenation of oils to give vanaspathi is an example of 

  1. AOption (a)

    Substitution reaction

  2. BOption (b)

    Addition reaction

  3. COption (c)

    Elimination reaction

  4. DOption (d)

    Rearrangement reaction

View answer & explanation

Correct answer

Answer: (a)A.

Substitution reaction

Explanation not yet available.

Question 397

AP Police SI 2018• Test

Which of the following molecules has highest dipole moment?  

  1. AOption (a)

    CCl4

  2. BOption (b)

    BF3

  3. COption (c)

    NH3

  4. DOption (d)

    NF3

View answer & explanation

Correct answer

Answer: (a)A.

CCl4

Explanation not yet available.

Question 398

AP Police SI 2018• Test

The carbon material which is used as molecular wires in integrated circuits is 

  1. AOption (a)

    Graphite

  2. BOption (b)

    Coke

  3. COption (c)

    Fullerene

  4. DOption (d)

    Nanotubes

View answer & explanation

Correct answer

Answer: (a)A.

Graphite

Explanation not yet available.

Question 399

AP Police SI 2018• Test

The chemical substance which is used as a flux in the extraction of iron from its oxide ore is 

  1. AOption (a)

    Silica

  2. BOption (b)

    Lime stone

  3. COption (c)

    Phosphorous pentoxide

  4. DOption (d)

    Magnesium sulphate

View answer & explanation

Correct answer

Answer: (a)A.

Silica

Explanation not yet available.

Question 400

AP Police SI 2018• Test

The crystals of copper sulphate are kept in contact with iron filings. The correct statement is  

  1. AOption (a)

    Blue colour of copper sulphate is lost

  2. BOption (b)

    Light green colour ferrous sulphate is formed

  3. COption (c)

    Red copper is formed

  4. DOption (d)

    No reaction occurs

View answer & explanation

Correct answer

Answer: (a)A.

Blue colour of copper sulphate is lost

Explanation not yet available.
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