Chemistry-

General

Easy

Question

The correct order of acidic strength is:

## The correct answer is:

Acidic character of oxides increases along the period.

### Related Questions to study

maths-

### Let E () =. If and differs by an odd multiple of /2,then E() E() is a -

### Let E () =. If and differs by an odd multiple of /2,then E() E() is a -

maths-General

maths-

### If A is a n rowed square matrix, A = [a_{ij}] where a_{ij}= , [ ] denotes greatest integer, then det (A) =

### If A is a n rowed square matrix, A = [a_{ij}] where a_{ij}= , [ ] denotes greatest integer, then det (A) =

maths-General

maths-

### If A = , then A + 2A^{T} equals -

### If A = , then A + 2A^{T} equals -

maths-General

maths-

### If is to be square root of two rowed unit matrix then , and should satisfy the relation

### If is to be square root of two rowed unit matrix then , and should satisfy the relation

maths-General

maths-

### If the matrix M_{r} is given by M_{r} = , r = 1, 2, 3 .... Then the value of det (M_{1}) + det(M_{2}) + .... + det (M_{2009}) is

### If the matrix M_{r} is given by M_{r} = , r = 1, 2, 3 .... Then the value of det (M_{1}) + det(M_{2}) + .... + det (M_{2009}) is

maths-General

maths-

### The number of solutions of the matrix equationA^{2} = is -

### The number of solutions of the matrix equationA^{2} = is -

maths-General

chemistry-

Helium was discovered by:

Helium was discovered by:

chemistry-General

chemistry-

### For a general reaction given, below the value of solubility product can be given as :

or

Solubility product gives us not only an idea about the solubility of an electrolyte in a solvent but also helps in explaining concept of precipitation and calculation of H^{+} ion, OH^{-} ion. It is also useful in qualitative analysis for the identification and separation of basic radicals.

Which metal sulphides can be precipitated from a solution that is 0.01 M in Na^{+} , Zn^{2+}, Pb^{2+} and Cu^{2+} and 0.10 M in H_{2}S at a pH of 1.0 ?

### For a general reaction given, below the value of solubility product can be given as :

or

Solubility product gives us not only an idea about the solubility of an electrolyte in a solvent but also helps in explaining concept of precipitation and calculation of H^{+} ion, OH^{-} ion. It is also useful in qualitative analysis for the identification and separation of basic radicals.

Which metal sulphides can be precipitated from a solution that is 0.01 M in Na^{+} , Zn^{2+}, Pb^{2+} and Cu^{2+} and 0.10 M in H_{2}S at a pH of 1.0 ?

chemistry-General

chemistry-

### A weak acid (or base) is titrated against a strong base (or acid), volume v of strong base (or acid) is plotted against pH of the solution. The weak protolyte i.e acid (or base) could be

### A weak acid (or base) is titrated against a strong base (or acid), volume v of strong base (or acid) is plotted against pH of the solution. The weak protolyte i.e acid (or base) could be

chemistry-General

maths-

### Let A = and A' . A = I, then the value of is -

### Let A = and A' . A = I, then the value of is -

maths-General

maths-

### If A is a n rowed square matrix, A = [a_{ij}] where a_{ij} =, [ ] denotes greatest integer, then det (A) =

### If A is a n rowed square matrix, A = [a_{ij}] where a_{ij} =, [ ] denotes greatest integer, then det (A) =

maths-General

maths-

### If A = and f(x) = 1 + x + x^{2} + … + x^{16}, then f(A) =

### If A = and f(x) = 1 + x + x^{2} + … + x^{16}, then f(A) =

maths-General

maths-

### Assertion : The expression n!(20 – n)! is minimum when n = 10.

Reason : is maximum when r = m.

### Assertion : The expression n!(20 – n)! is minimum when n = 10.

Reason : is maximum when r = m.

maths-General

Maths-

### Let a matrix A = & P = Q = PAP^{T} where P^{T} is transpose of matrix P. Find P^{T} Q^{2005} P is

an invertible matrix gives identity matrix as the product when multiplied with its inverse.

### Let a matrix A = & P = Q = PAP^{T} where P^{T} is transpose of matrix P. Find P^{T} Q^{2005} P is

Maths-General

an invertible matrix gives identity matrix as the product when multiplied with its inverse.

Maths-

### Let A =& I = and A^{-1}= [A^{2}+CA+dI], find ordered pair (c,d) ?

the roots of the characteristic equation give us the eigenvalues of the matrix.

### Let A =& I = and A^{-1}= [A^{2}+CA+dI], find ordered pair (c,d) ?

Maths-General

the roots of the characteristic equation give us the eigenvalues of the matrix.