MCQ
Which of the following is a cyclic phosphate
- A${H_5}{P_3}{O_{10}}$
- B${H_6}{P_4}{O_{13}}$
- ✓${H_5}{P_5}{O_{15}}$
- D${H_7}{P_5}{O_{16}}$
Therefore only $H _5 P _5 O _{15}=\left( HPO _3\right)_5$ satisfies this.
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$(a)$ Effective nuclear charge for nitrogen is $3.90$
$(b)$ $IP$ of $Ne$ is more than $Na^+$
$(c)$ Order of electron negativity $sp > sp^2 > sp^3$
$(d)$ Order of acidic character $NH_3 < PH_3 < AsH_3$
| List$-I$ Test/Reagents/Observation(s) | List$-II$ Species detected |
| $(a)$ Lassaigne's Test | $(i)$ Carbon |
| $(b)\;Cu ( II )$ oxide | $(ii)$ Sulphur |
| $(c)$ Silver nitrate | $(iii)\;N , S , P ,$ and halogen |
| $(d)$ The sodium fusion extract gives black precipitate with acetic acid and lead acetate | $(iv)$ Halogen Specifically |
The correct match is