List of practice Questions

The number of electrons gained by non-metal element is equal to its

Corrosion of copper produces

22-carat Gold contains

Formula of Rust is

Chemical used to remove impurities from ore is called

Atomic number of the element of VA group, coming after nitrogen is

Identify the element that belongs to 2nd group and 3rd period.

Identify the correct statement.

Identify the structure of propyne

functional group indicates

The sum of the exponents of the prime factors in the prime factorization of 156 is

Ethyl alcohol upon oxidation produces

Which of the following are called paraffins?

Ethene and ethyne differ in

Which term of the geometric progression \(2,2\sqrt{2},4,…..\)is \(128?\)

If the geometric progressions 162, 54, 18, ..... and \(\frac{2}{81},\frac{2}{27},\frac{2}{9}\),…have their nth term equal, then the value of n is

The points A(-5,0), B(5,0) and C(0,4) are the vertices of which triangle?

The X-axis divides the line joining the points A(2,-3) and B(5,6) in the ratio of

If four vertices of a parallelogram are (-3,-1),(a,b),(3,3) and (4,3) taken in order,then the ratio of a and b is

If the centroid of the triangle formed by the points \((3,-5),(-7,4)\) and \((10,-k )\) is at the point \((k, –1)\), then the value of k is

If AM and PN are the altitudes of two similar triangles \(∆ABC\) and \(∆PQR\) respectively and \((AB)^ 2 : (PQ) ^2 = 4 : 9\), then \(AM : PN =\)

In the given \(∆ABC\), if \(DE || BC, AE = a\) units, \(EC = b\) units, \(DE = x \) units and \(BC = y\) units, then which of the following is true?

In the given figure, PA is the tangent drawn from an external point P to the circle with center O. If the radius of the circle is 3 cm and PA = 4 cm, then the length of PB is

In two concentric circles, a chord of length 24 cm of larger circle becomes a tangent to the smaller circle whose radius is 5 cm. Then the radius of the larger circle is

The area of the circle that can be inscribed in a square of side 10 cm is