Download App

p -Block elements - ll — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
In which compound, the oxidation state of nitrogen is  $-1$
  • A
    $NO$
  • B
    ${N_2}O$
  • ✓
    $N{H_2}OH$
  • D
    ${N_2}{H_4}$
✓

Answer

Correct option: C.
$N{H_2}OH$
c
$N^*H _2 OH$

$x+2+(-2)+1=0$

$x+2-2+1=0$

$x=-1$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from p -Block elements - ll→p -Block elements - ll — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following does not give oxygen on heating ?
→
Compound $C_4H_8Cl_2$ $(A)$ on hydrolysis gives a compound $C_4H_8O$ $(B)$ which reacts with hydroxylamine and does not give any test with Tollen's reagent. What are $(A)$ and $(B)$ ?
→
IUPAC name for the complex [Cu(NH3​)4​]SO4​ is:
→
Consider the statements $S_1$ and $S_2$:
$S_1$: Conductivity always increases with decrease in the concentration of electrolyte.
$S_2$: Molar conductivity always increases with decrease in the concentration of electrolyte.
The correct option among the following is
→
The correct decreasing order for acidic strength is
→
Lanthanum is grouped with $f-$ block elements because
→
$4-$ carbohydrate glucose, lactose , sucrose, starch are present. Different test is carried out with $4-$ carbohydratcs separately. Following observation takes place. 

$(a)$ Heated : it is charred

$(b)$ $I_2$ solution : no violet colour

$(c)$ Fehling solution : reddish brown ppt. is observed

$(d)$ It does not reduce copper$(II)$ acetate to $Cu_2O$ . No red precipiated is observed in $5/ min$ 

The carboxylate which satisfy all the above observation 

→
Which of the comparison regarding $Zn,\,Cd,\,Hg$ is/are incorrect ?

$(I)$ $ZnCl_2$ is ionic whereas $CdCl_2$ and $HgCl_2$ are covalent

$(II)$ $Zn$ and $Cd$ dissolves in dilute acid $(HCl)$ liberating $H_2$ but $Hg$ can not

$(III)$ $Zn$ and $Cd$ forming with ppt. of $Zn(OH)_2$ and $Cd(OH)_2$ but $Hg$ forms coloured ppt. of

$(IV)$ all from $A_2^{2+}$ type ion

→
The major product obtained on acid - catalysed hydration of 2-phenylpropene is:
→
The standard electrode potential values of three metallic cations $X , Y , Z$ are, $0.52 V,-3.03 V$ and -1.18 V respectively. The order of reducing ability of corresponding metal is :
→