Home
Class 12
CHEMISTRY
Which of the following statements are n...

Which of the following statements are not correct ?
(I) `PCl_5` is known but `PBr_3` is not known.
(II) In `S_2F_10`, sulphur atoms have octahedral geometry.
(III) `SF_4` is much less reactive than `SF_6`.
(IV) Bleaching action of chlorine is permanent because it bleaches by reduction.

A

I, III, IV

B

I, IV

C

II, III, IV

D

II, IV

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST PAPER - 3

    MODERN PUBLICATION|Exercise MCQs|60 Videos
  • MOCK TEST PAPER -2

    MODERN PUBLICATION|Exercise MCQs|60 Videos

Similar Questions

Explore conceptually related problems

Read the following statements (i) the point of bifurcation of trachea is called carina and is at the level of 5th thoracic vertiebra (ii)the right bronchus is shorter wider and more in line with trachea than the left bronchus (iii) the bronchioles are without cartilaginous rings (iv) the surfactant of lungs is secrated in infants between 6th and 7th month of life which of these are correct ?

Which of the following photosynthetic characteristics are present in C_(3) plants but not in C_(4) plants- I. CO_(2) compensation point of 0-10 ppm- II. Relatively higher rate of photorespiratory CO_(2) evolution- III. Presence of well developed bundle sheath- IV. Initial involvement of RUBP carboxylase in CO_(2) assimilation - Select the correct answer using the codes given below

Consider the following statements conerning food chains (i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation (ii) Removal of most of the carnivores resulted in an increased population of deers (iii) The length of food chains is generally limited to 3 - 4 trophic levels due to energy loss (iv) The length of food chains may vary from 2 to 8 trophic levels Which two of the above statements are correct?

Go through the following statements : (i) Lysosomes contain hydrolytic enzymes which are optimally active at the alka line pH. (ii) A number of proteins synthesised by ribosomes on the endoplasmic reticulum are modified in the cisternae of the Golgi apparatus before they are released from its cis face. (iii) Typically a mitochondrion has a diameter of 0.2-1.0 mu m and length of 1.0 - 4.1 mu m (iv) Elaioplasts store oils and fats. Find out the correct statements

Calculate number of atoms in each of the following" i. 0.5 mol atom of nitorgen ii. 0.2 mol molecules of hydrogen iii. 3.2 g of sulphur Calculate number of molecules in each of the following: i. 14 g of nitrogen ii. 3.4 g of H_(2) S

State whether each of the following statements is true or false. Justify your answers. (i) {2,3,4,5} and {3,6} are disjoint sets. (ii) {a,e,I,o,u} and {a,b,c,d} are disjoint sets. (iii) {2,6,10,14} and {3,7,11,15} are disjoint sets. (iv) {2,6,10} and {3,7,11} are disjoint sets.

MODERN PUBLICATION-MOCK TEST PAPER - 4-MCQs
  1. Consider two standard half cells based on the reaction. Ag^(+) (aq) + ...

    Text Solution

    |

  2. The half- life for decay of ""^(14)C by beta-emission is 5730 years. T...

    Text Solution

    |

  3. The correct order of basicities of the following compounds is : (1) ...

    Text Solution

    |

  4. The solubility products of AgCl and Ag2CrO4 are 1.5 xx 10^(-10) and 9 ...

    Text Solution

    |

  5. Which of the following is used to produce smoke screens ?

    Text Solution

    |

  6. In the adsorption of a gas on solid, Freundlich isotherm is obeyed. Th...

    Text Solution

    |

  7. If DeltaG^@ (HI, g) is 1.7 kJ, what is the equilibrium constant at 20^...

    Text Solution

    |

  8. Which of the following statements are not correct ? (I) PCl5 is kno...

    Text Solution

    |

  9. Chlorine shows bleaching action in :

    Text Solution

    |

  10. Which of the following ions will give coloured solution ?

    Text Solution

    |

  11. Number of electrons transferred in each case when KMnO4 acts as an oxi...

    Text Solution

    |

  12. Two reactions of the same order have equal preexponential factors but ...

    Text Solution

    |

  13. The complex [CoF6]^(4-) is :

    Text Solution

    |

  14. The correct IUPAC name of the following compound is : H3C - CH = un...

    Text Solution

    |

  15. Among the following ethers, which one will produce methyl alcohol on t...

    Text Solution

    |

  16. One mole of alkene on ozonolysis gives 2 moles of butanone. The alkene...

    Text Solution

    |

  17. Which of the following compounds will not undergo Friedal-Craft's reac...

    Text Solution

    |

  18. Anaemia is caused by the deficiency of vitamin :

    Text Solution

    |

  19. Which one of the following is not a condensation polymer ?

    Text Solution

    |

  20. Which one of the following is used for treatment of syphilis ?

    Text Solution

    |