Which of the following is not a transition metal
Which of the following is not a transition metal
Options
(a) Cr (b) Mn (c) Sn (d) Cu
Correct Answer:
Sn
Explanation:
No explanation available. Be the first to write the explanation for […]
Chemistry
Which one of the following statements is not true
Which one of the following statements is not true
Options
(a) Variable valencies are shown by the transition elements (b) Electrons enter into the 3d-orbitals in the first series of the transition elements […]
Four successive members of the first series of the transition metals
Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential (E⁰ M²⁺/M) value has a positive sign
Options
(a) Co (Z […]
Which one of the following does not correctly represent the correct order
Which one of the following does not correctly represent the correct order of the property indicated against it
Options
(a) Ti < V < Cr < Mn; increasing number of oxidation states (b) […]
Identify the alloy containing a non – metal as a constituent in it
Identify the alloy containing a non – metal as a constituent in it
Options
(a) Invar (b) Steel (c) Bell metal (d) Bronze
Correct Answer:
Steel
Explanation:
No explanation available. Be the first […]
Which of the following pairs has the same size
Which of the following pairs has the same size
Options
(a) Fe²⁺ , Ni²⁺ (b) Zr⁴⁺ , Ti⁴⁺ (c) Zr⁴⁺ , HF⁴⁺ (d) Zn²⁺ , HF⁴⁺
Correct Answer:
Zr⁴⁺ , HF⁴⁺
Explanation:
No […]
Which one of the elements with the following outer orbital configuration
Which one of the elements with the following outer orbital configuration may exhibit the largest number of oxidation states
Options
(a) 3d⁵4s¹ (b) 3d⁵4s² (c) 3d²4s² (d) 3d³4s²
Correct Answer:
3d⁵4s²
Explanation:
Greater […]
The number of acidic protons in H₃PO₃ are
The number of acidic protons in H₃PO₃ are
Options
(a) 0 (b) 1 (c) 2 (d) 3
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the explanation for this […]
NO₂ is not obtained on heating
NO₂ is not obtained on heating
Options
(a) AgNO₃ (b) KNO₃ (c) Cu(NO₃)₂ (d) Pb(NO₃)₂
Correct Answer:
KNO₃
Explanation:
NO₂ is prepared by heating nitrates of heavy metals. 2pb(NO₃)₂ → 2pbO + 4NO₂ […]
Which of the following is used to prepare Cl₂ gas at room temperature from
Which of the following is used to prepare Cl₂ gas at room temperature from concentrated HCl
Options
(a) MnO₂ (b) H₂S (c) KMnO₄ (d) Cr₂O₃
Correct Answer:
KMnO₄
Explanation:
KMnO₄ oxidised halogen acids to […]