Question
What is called a battery? Explain its characteristics and describe dry cell and mercury cell.
✓
Answer
self
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
- The acid strength of alcohols decreases in the order
- Phenol is more easily nitrated than benzene.
- Account for the following:
- Acidic character increases from HF to HI.
- There is large difference between the melting and boiling points of oxygen and sulphur.
- Nitrogen does not form pentahalide.
- Draw the structures of the following:
- $ClF_3$
- $XeF_4$
Describe graphically the experimental method of measuring the conductivity of electrolyte solutions (ionic solution).
Give reasons for the following:
On electrolysis in acidic solution amino acids migrate towards cathode, while in alkaline solution these migrate towards anode.
On electrolysis in acidic solution amino acids migrate towards cathode, while in alkaline solution these migrate towards anode.
$i. \text{IUPAC} $ Write structures of different isomeric amines corresponding to the molecular formula, $C_4H_{11}N.$
$ii.$ Write $ \text{IUPAC} $ names of all the isomers.
$iii.$ What type of isomerism is exhibited by different pairs of amines?
→$ii.$ Write $ \text{IUPAC} $ names of all the isomers.
$iii.$ What type of isomerism is exhibited by different pairs of amines?
Explain with two examples each of the following: Coordination entity, ligand coordination number, coordination polyhedron, homoleptic and heteroleptic.
- Complete the following chemical equations:
- $Cu + HNO_3 (dilute) →$
- $XeF_4 + O_2F_2 \rightarrow $
- Explain the following observations:
- Phosphorus has greater tendency for catenation than nitrogen.
- Oxygen is a gas but sulphur a solid.
- The halogens are coloured. Why?
$FeSO_4$ solution mixed with $\left( NH _4\right)_2 SO _4$ solution in $1:1$ molar ratio gives the test of $Fe ^{2+}$ ion but $CuSO _4$ solution mixed with aqueous ammonia in $1: 4$ molar ratio does not give the test of $Cu ^{2+}$ ion. Explain why?
→Describe the mechanism of replication of DNA.
Match the formulas of oxides given in Column I with the type of oxide given in Column II and mark the correct option.
→| Column I | Column II | ||
| $(A)$ | $Pb_3O_4$ | $(1)$ | Neutral oxide |
| $(B)$ | $N_2O$ | $(2)$ | Acidic oxide |
| $(C)$ | $Mn_2O_7$ | $(3)$ | Basic oxide |
| $(D)$ | $Bi_2O_3$ | $(4)$ | Mixed oxide |
- $A (1) B (2) C (3) D (4)$
- $A (4) B (1) C (2) D (3)$
- $A (3) B (2) C (4) D (1)$
- $A (4) B (3) C (1) D (2)$