J Chemistry 20

The general formula for the Alkanals is?

The most important element on the earth's crust is?

How many valence electrons are contained in the element ³¹₁₅P?

8 g of CH₄ occupies 11.2 dm³ at s.t.p. What volume would 22 g of CH₃CH₂CH₃ occupy under the same condition? C = 12,H = 1

Duralumin consists of aluminum, copper?

Chromatography is used to separate components of mixture which differ in their
rates of ?

Deliquescent substances are also?

The best treatment for a student who accidentally poured conc
tetraoxosulphate(vi) on his skin in the laboratory is to wash his skin with?

An electron can be added to a halogen atom to form a halide ion with?

When cathode rays are deflected onto the electrode of an electrometer, the
instrument becomes?

An organic compound that does not undergo a reaction with both hydrogen
cyanide and hydroxylamine can be?

What quantity of electricity will liberate 0.125 mole of oxygen molecules during
the electrolysis of dilute sodium chloride solution?

If the quantity of oxygen occupying 2.76L container at a pressure of 0.825 atm
and 300k is reduced by one-half, what is the pressure exerted by the remaining
gas?

When water drops are added to calcium carbide in a container and the gas
produced is passed through a jet and lighted, the resultant flame is called an?

The chlorinated alkane often used industrially to remove grease is?

Which of the following gases will rekindle a brightly splint?

Which of the following substances is a mixture?

Proteins in acid solution undergo?

Which of the gas laws does this graph illustrate?

Aluminum hydroxide is used in the dyeing industry as a?

An example of a polysaccharide is?

The substance often used for vulcanization of rubber is?

Helium is used in observation of ballons because it is?

When a solid substance disappears completely as a gas on heating, the
substance is said to have undergone?

The electronic configuration of an element is
1s² 2s² 2p⁶ 3s² 3p³.
Where is the element located in the periodic table?

A gaseous metallic chloride MCl consists of 20.22% of M by mass. The formula
of the chloride is? [ M = 27, Cl = 35.5]

The products of the thermal decomposition of ammonium trioxonitrate(v) are?

What process would coal undergo to give coal gas, coal tar, ammoniacal liquor
and coke

What mass of water is produced when 8.0g of hydrogen reacts with excess
oxygen?

The shape of ammonia molecule is?

The number of molecules of Carbon(iv)Oxide produced when 10.0g of CaCO₃ is treated with 0.2dm³ of 1 Mole of HCL in the equation
CaCO₃ + 2HCL \(\rightarrow\) CaCl₂ + H₂O+ CO₂ , is ?

Four elements P, Q, R and S have atomic numbers of 4, 10, 12 and 14
respectively. Which of these elements is noble gas?

Which of the following can be obtained by fractional distillation?

A few drop of conc HCL are added to about 10cm³ of a solution of PH 3.4. The PH of the resulting mixture is

What are the possible oxidation numbers of an element if its atomic number is
17?

32g of anhydrous copper(ii) tetraoxosulphate(vi) dissolved in 1dm³ of water generated 13.0kj of heat. The heat solution is?

Liquid black soap is made by boiling palm oil with liquid extract of ash. The
function of the ash is to provide the ?

The volume occupied by 1.58g of a gas at S.T.P is 500cm3. What is the relative
molecular mass of the gas? [ G.M.V at S.T.P = 22.4dm³ ]

Which of the following types of bonding does not involve the formation of new
substances?

To obtain pure carbon(ii)oxide from its mixture with carbon(iv)oxide, the mixture
should be?