d and f Block Elements · Chemistry · MHT CET

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MCQ (Single Correct Answer)

1

Which from following is a soft metal?

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2

If $\operatorname{Ln}$ represents lanthanoid element find the general formula of lanthanoid hydroxide.

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3

Which from following lanthanoids exhibits +4 oxidation state in $\mathrm{F}^7$ configuration?

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4

Which cation from following develops least magnetic moment?

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5

Which from following is a lanthanoid element?

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6

What is the number of unpaired electrons in Ti in +3 state?

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7

Identify the element from following such that the last electron is placed in $(\mathrm{n}-1) \mathrm{d}$ orbital.

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8

Which transition series includes elements Co and Mo respectively?

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9
Which from following elements is NOT regarded as transition element?
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10
Which from following cations develops lowest value of spin only magnetic moment?
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11

Which pair of metal ions from following have same number of unpaired electrons?

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12

Identify an actinoid element from following.

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13

Which from following elements has completely filled 4 f orbital at expected ground state configuration?

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14

What is the general formula of lanthanoid hydroxide? (Consider Ln as any lanthanoid element)

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15

Which among the following properties is NOT exhibited by transition elements?

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16

Which among the following is ferromagnetic substance?

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17

Which element from following is the last element of 5d-transition series?

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18

Which element from following is NOT considered as transition element on the basis of electronic configuration?

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19

Which element from following has lowest ionization enthalpy $\left(\mathrm{IE}_1\right)$ ?

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20

Which element from following exhibits highest number of various different possible oxidation states?

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21

Which element from following does NOT exhibit magnetic moment in +2 state?

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22

Identify false statement about transition elements.

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23

Identify rare earth element from following.

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24

Which element from following has completely filled f-orbital in observed and expected electronic configuration?

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25

Which element from following in +2 state exhibits highest magnetic moment?

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26

What is the highest oxidation state of third row transition elements?

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27

Which from following elements belongs to the actinoids?

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28

What is the number of electrons present in d-subshell if its atomic number is 27 and oxidation state is +2 ?

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29

Which from following properties of lanthanoids is NOT true?

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30

Which element from following has half filled If orbital at observed ground state?

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31

Identify ferromagnetic substance from following.

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32

Which pair of elements from following has halt filled d-orbital in observed electronic configuration?

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33

Identify the element having smallest ionic size in +3 state from following.

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34

Which from following lanthanoids exhibits no effective magnetic moment in +3 state?

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35

Which from following metal ions in their respective oxidation states forms coloured compound?

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36

What is the number of electrons present in 3d orbital of Ti in +2 state?

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37

Identify a compound having highest thermal stability.

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38

Which from following is NOT a lanthonoid element?

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39

Which from following catalysts is used in the Haber's process for manufacture of ammonia?

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40

Which element from following exhibits lowest number of different oxidation states?

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41

What is the total number of unpaired electrons in an element placed at period-4 and group-12 either in excited or at ground state?

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42

Which among the following elements does NOT exhibit ferromagnetic properties?

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43

Which from following elements is in liquid state at room temperature?

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44

Find the number of unpaired electrons for copper in ground state configuration.

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45

Identify the element having highest ionization enthalpy.

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46

Which among the following cations produces colourless aqueous solution in their respective oxidation state?

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47

What is the number of elements present in each series of transition element?

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48

Which from following elements exhibits ferromagnetic properties?

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49

Which element from the following possesses half-filled d-orbitals either in expected or in observed electronic configuration?

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50

What is the numerical value of spin only magnetic moment of copper in +2 state?

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51

Which element from following does NOT exhibit spin only magnetic moment in +3 state?

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52

Which from following cations in their respective oxidation states develops colourless aqueous solution?

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53

Oxidation state of manganese in potassium permanganate is:

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54

Which of the following elements is doped with to obtain fibre amplifiers for optical fibre communication system?

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55

Identify lanthanoid element from following.

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56

What is the stock notation of Manganese dioxide?

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57

Which from following statements regarding transition elements is NOT CORRECT?

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58

Identify the element from following having six unpaired electrons in observed electronic configuration?

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59

What are different possible oxidation states exhibited by scandium?

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60

Find the value of spin only magnetic moment for chromium cation in +2 state.

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61

Which among the following properties of lanthanoids is NOT true?

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62

Identify the element with smallest ionic radius in +3 oxidation state from following.

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63

Which among the following cations will not form coloured compounds? (Atomic number $$\mathrm{Cu}=29, \mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Mn}=25$$)

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64

Which element from following in +3 oxidation state forms colourless compounds?

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65

What is value of spin only magnetic moment of $$\mathrm{Ni}(\mathrm{Z}=28)$$ in +2 oxidation state?

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66

Which of the following elements in their respective oxidation states does not develop spin only magnetic moment? [$$\mathrm{Ti}(\mathrm{Z}=22), \mathrm{Zn}(\mathrm{Z}=30), \mathrm{V}(\mathrm{Z}=23), \mathrm{Cu}(\mathrm{Z}=29)$$]

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67

Identify ferromagnetic element from following.

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68

Which element from following lanthanoids has half-filled $$\mathrm{f}$$- orbital in observed and expected electronic configuration?

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69

Which element from following exhibits various different oxidation states from +2 to +7?

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70

Which block elements from following are known as transition elements?

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71

Which element among the following is ferromagnetic?

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72

Which property from following is NOT exhibited by interstitial compounds?

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73

What are the formulae of the compounds formed when lanthanoids (Ln) react with nitrogen and halogen respectively?

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74

Which among following properties of lanthanoids is NOT true?

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75

Which among the following elements has completely filled 4d-orbital?

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76

Identify the correct statement about properties of interstitial compounds.

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77

Identify the correct decreasing order of densities of $d$-block elements.

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78

Which of the following actinoids exhibits only +3 oxidation state?

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79

Which of the following elements belongs to first inner transition series?

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80

Identify the element having highest enthalpyot atomisation from following.

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81

Which among the following lanthanoids, shows only +3 oxidation state?

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82

.What is the shape and magnetic nature of permanganate ion?

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83

The highest oxidation state in plutonium (At. no. $=94$) is

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84

When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

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85

The ionic charges on chromate ion and dichromate ion respectively is

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