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Methyl alcohol is present in many ayurvedic tonics and helps in improvement of appetite.

What is the formula for Lead Nitrate

Which of the following gas is prepared by warming ammonium sulphate with slaked lime?

The carbon-based reduction method is NOT used for the extraction of

The harmless gases released by thermal power plants and smelters are

Extra sum for chemical reaction

Calcination is a process in which ore is heated in the absence of air. As a result of which the ___ ore is converted into its oxide.

On heating copper powder in air the surface of copper powder becomes coated with black CuO . How can this black coating be converted into brown copper? Write a chemical equation for the reaction that occurs during the colour change.

The electronic configuration of Ti is 1$s^2$ 2$s^2$ 2$p^6$ 3$s^2$ 3$p^6$ 3$d^2$ 4$s^2$ and it represents:

Equal masses of gaseous $N_2,N{H}_3$ and $N_{2}O$ are injected into an evacuated container to produce a total pressure of 3 atm. What is the correct order of partial pressure of these gases?

From the part of a periodic table, answer the following question:
$\begin{array}{ccccccc}1& 2& 13& 14& 15& 16& 17\\ Hydrogen& & & Carbon& & Oxygen& Fluorine\\ X& & & P& & & Q\\ Y& & & & & & R\\ Z& & & & & & T\end{array}$
Atomic number of oxygen is 8. What would be the atomic number of, Fluorine?

Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
$\left(a\right)A{l}_2{O}_3+Fe\left(b\right)Mn{O}_2+Al\left(c\right)F{e}_2{O}_3+Al\left(d\right)C{u}_{2}O+Fe$

Which of the following metals are extracted by the electrolysis of their molten chlorides?
(a) Na and Hg (b) Hg and Mg (c) Na and Mg (d) Cu and Fe

The acid present in curd is:

The property which is not shown by acids is :

(a) they have a sour taste

(b) they feel soapy

(c) they turn litmus red

(d) their pH is less than seven

A p-n junction diode is made up of a material which has energy gap of $3.0\text{eV}$. The maximum wavelength of radiation that can be absorbed by the material is nearly equal to

A copper coin is kept immersed in a solution of silver nitrate for some time. What will happoen to the coin and the colour of the solution?

Name three metals which do not corrode.

What is aqua regia? Name two special metals which are insoluble in common reagents but dissolve in aqua-regia.

What are the reactants in the following reaction?

$KOH\left(aq\right)+HN{O}_3\to H_{2}O\left(l\right)+KN{O}_3\left(aq\right)$

The sea water contains water beetles, tadpole, fish and weeds.

(a) Write a food chain comprising all the given organisms.

(b) Which organisms in the food chain are (i) herbivore, and (ii) carnivores?

(c) Which organisms are (i) predators, and (ii) prey?

(d) Which organisms can trap solar energy to make food?

(e) Which organism is a secondary consumer?

Write the chemical name and formula of the following salts. [2 MARKS]
a) Epsom salt
b) Blue vitriol

What are the products formed when $\text{MgO}$ reacts with $\text{HCl}$?

Arrange the following alkanes in increasing order of their melting points.

Which oxide is neutral?

What are the differences and similarities between concentration and solubility?

Which process is used for the industrial preparation of sulphuric acid?

Is every Displacement reaction also a precipitation reaction?Elaborate with examples.

Metallic sulphide reacting with hydrochloric acid forms salt and ___.

Which is more denser- Ammonia or Hydrogen chloride?

Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called:

(a) decomposers

(b) producers

(c) herbivores

(d) carnivores

What does the symbol (aq) represent in a chemical equation ?

We observe black coating (silver oxide) on silver articles when left open in surroundings.This is because of the

process called _____________.

What is the reason behind alkane's insolubility in water?

In tossing a die 10 times, the outcomes are noted.

1, 3, 2, 1, 5, 6, 3, 4, 1, 5

S1: The empirical probability of getting a 1 is $\frac{1}{6}$.

S2: The theoretical probability of getting a 1 is $\frac{1}{6}$.

Which of the following is used as the cathode in electrolytic refining of zinc?

Beakers A, B, and C contain zinc sulphate, silver nitrate, and ferrous sulphate solutions respectively.

Copper pieces are added to each beaker. The blue colour will appear in case of:

Describe an activity with diagram to illustrate that the reaction of metal bicarbonate with acids produce carbon-dioxide gas and process of testing the gas. Write the chemical equation involved in this.

Hydrogen forms only one bond, valency of hydrogen is -

While digesting milk,it mixes with HCL acid, what happens at that moment when they get mixed or what will happen if we mix HCl with milk.

When Ba(OH)₂ is added to NH₄Cl then which of the following reactions is correct regarding the products formed:

Ba(OH)₂ + 2NH₄Cl ---------> BaCl₂ + 2NH₃ + 2H₂O

OR

Ba(OH)₂ + 2NH₄Cl ----------> BaCl₂ + 2NH₄OH

how do you come to know wether chemical reaction has taken place or not?