Unanswered Class Vii X Chemistry Questions

Arrange the following hydroxides in order of their solubility. Magnesium hydroxide(1),Calcium Hydroxide (2),Barium Hydroxide (3),Strontium Hydroxide (4) ...

Which of these salts is least ionic ? ...

You are given four boxes; containing four different types of substances. It is seen that the substance in the first one conducts electricity in its aqueous solution, the second conducts it in its native form/solid and the thi ...

In a material science laboratory certain salts were melted in order to find the ideal decorative crystal for interstellar travel. Salt A melted at 399 degrees, Salt B melted at 814 Salt C melted at 414 And salt D melted ...

Which of these gases have a triple bond? ...

In a certain alternate Universe the Aufbau principle is known to not work.The order of shell filling is according to the ascending order of azimuthal quantum numbers. What kind of element then will Calcium Be ? ...

Arrange in order of Elecctronegativity .Oxygen(A), Chlorine(B), Sulphur(C). ...

The first ionization potential of Na, Mg, Al, Si are in the order: ...

An atom of one element A has four elements in its outermost shell, and that of B has six electrons in the outermost shell. The formula of the compound formed by these two will be ...

which of the following is the correct order of ionization energy 1. Be+>Be 2. Be>Be+ 3. C>Be 4. B>Be ...

Consider the first ionization energies of the elements whose electronic configurations corresponds to the following.Which of these is the highest ? (i) [He]2s22p3 (ii) [He]2s22p4 (iii) [Ne]3s23p1 (iv)[Ar]3d104s1 ...

Which follows octet rule? ...

How will the compounds solubility in water compare with the solubility of Calcium Bromide of our Universe ? ...

Among the following, electron deficient compound is ...

A salt derived from a strong base and a weak acid will give a salt that is ...

Which of the following is most acidic? ...

Which of these gases have a tripple bond ? ...

The conjugate acid of NH2- is ...

Which of these do not follow the octet rule ? ...

Which of these is expected to have the strongest Congugate base? ...

How would you distinguish between a sample of Sodium Chloride solution and sodium sulphate solution. ...

Calculate the oxidation number of Sulphur in Sulphuric acid ,Sulphurous acid,Hydrogen Sulphide ...

A pole 12 m high casts a shadow 4 √3 m long on the ground. Find the angle of elevation. ...

An observer 1.5m tall is 20.5m away from a tower 22m high. Determine the angle of elevation of the top of the tower from the eye of the obseserver. ...

Siderite is an ore of ______. ...

Which of the following alternatives does not mention a condition required for electrolysis? ...

The head of the safety match contains a mixture of ...

In anodization of aluminium the anode is ...

In the electrolysis of dil. Copper sulphate what are the ions that discharge in the electrodes? ...

A salt reacting with dil. H2SO4 gives a reddish brown gas. The salt is ...