MCQ
What measure do farmers use to control soil acidity?
- AFarmers use pesticides.
- BFarmers use chemical fertilizers.
- CFarmers use borax.
- ✓Farmers use limestone.
✓
Answer
Correct option: D.
Farmers use limestone.
Soil acidity is often increased by the use of the large amounts of fertiliser needed for the potato crop in this region. To control soil acidity, farmers apply ground limestone to the soil, and then mix it in with tillage implements.
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
Aqueous solution of two compounds $M_1OH$ and $M_2OH$ are prepared in two different beakers if the $EN$ of $M_1 = 3.4, EN$ of $M_2 = 1.2, EN$ of $O = 3.5$ and $EN$ of $H = 2.1$, then nature of two solutions will be
→An ideal gas is expanded from $1 \times 10^{-3} \,m^3$ to $1 \times 10^{-2} \,m^3$ against constant pressure of $1 \times 10^5\, N/m^2$ at $300\, K$. The work done is
→Borax is :
Which of the following pairs are members of a homologous series?
Reactant $(A)$ can be
→Volume of air required to completely burn $10$ litres of $C_2H_4$ is ................ $\mathrm{L}$ (assume all volumes are measure at same temperature and pressure)
→What will be $\Delta S$ for reaction: $2A + 3B \to 4C + 5D$
→$\Delta S_A^o = 100\frac{J}{{mol \times k}}$ $\Delta S_C^o = 200\frac{J}{{mol \times k}}$
$\Delta S_B^o = 120\frac{J}{{mol \times k}}$ $\Delta S_D^o = 150\frac{J}{{mol \times k}}$
The energy of a hydrogen atom in the ground state is $\ce{13.6 eV}$. The energy of $\ce{He} +$ ion in the first excited state will be :
→In which of the following does sulphur has the lowest oxidation state?
In which of the following molecules the central atom does not have $sp^3$ hybridization?
→