What is an olfactory indicator? Name two olfactory indicators. What is the effect of adding sodium hydroxide solution to these olfactory indicators?

Acids, Bases and Salts | Chemistry | Class 10 | Lakhmir Singh

When it’s combined in an acidic or basic solution, olfactory markers are the smells or odors that alter. It can be used in the lab to determine whether a solution is acid or basic, as well as to do olfactory titration.

The olfactory indications are onion and vanilla extracts.

When a basic solution, such as sodium hydroxide, is put to a fabric strio that has been treated with onions, the scent is gone.

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Find the shortest distance between the given lines. $$ \begin{array}{l} \square \vec{r}=(\hat{i}+\hat{j})+\lambda(2 \hat{i}-\hat{j}+\hat{k}) \\ \vec{r}=(2 \hat{i}+\hat{j}-\hat{k})+\mu(3 \hat{i}-5 \hat{j}+2 \hat{k}) \end{array} $$

Which of the following compounds has tetrahedral geometry? (a) $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{-2}$ (b) $\left[\mathrm{Pd}(\mathrm{CN})_{4}\right]^{2-}$ (c) $\left[\mathrm{PdCl}_{4}\right]^{2-}$ (d) $\left[\mathrm{NiCl}_{4}\right]^{2}$

Oxidation number of gold metal is (a)+1 (b) 0 (c) $-1$ (d) all of these

Question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

Match the following:

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Find the shortest distance between the given lines. $$ \begin{array}{l} \square \vec{r}=(\hat{i}+\hat{j})+\lambda(2 \hat{i}-\hat{j}+\hat{k}) \\ \vec{r}=(2 \hat{i}+\hat{j}-\hat{k})+\mu(3 \hat{i}-5 \hat{j}+2 \hat{k}) \end{array} $$

Which of the following compounds has tetrahedral geometry? (a) $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{-2}$ (b) $\left[\mathrm{Pd}(\mathrm{CN})_{4}\right]^{2-}$ (c) $\left[\mathrm{PdCl}_{4}\right]^{2-}$ (d) $\left[\mathrm{NiCl}_{4}\right]^{2}$

Oxidation number of gold metal is (a)+1 (b) 0 (c) $-1$ (d) all of these

Question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

Question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

Match the following:

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