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If excess of AgNO3 solution is added to 100 mL of a 0.024 M solution of dichlorobis (enthylenediamine) cobalt (III) chloride, how many moles of AgCl be precipitated?

Solution: The name of complex is dichlorobis (ethylenediamine) cobalt (III) chloride The oxidation state of cobalt is +3 Net charge on... View Article

Which of the following overlapping is not present in XeO3 molecule? (a) sp3+ px (b) sp3 + py (c) sp3 + pz (d) sp3 + s

Ans:(d) sp3+ s In XeO3, Ground state of electronic configuration Xe = [Kr] 4d10 5s2 5p6 Excited state of electronic configuration Xe = [Kr]... View Article

Which of the following are basic oxides? Mn2O7,V2O3, V2O5, Cr2O3,CrO

Metal oxides in lowest oxidation states are more basic. On moving along a period,the metallic character decreases. So the basic character of... View Article

Observe the number line given below and answer the questions. On jumping 4 units to the right of -2, we land at what point?

Clearly we can see from the figure given below, on jumping 4 units to the right of -2, we land at point 2.... View Article

A tower stands vertically on the ground. From a point on the ground which is 20 m away from the foot of the tower is found to be 60º. The height of the tower is:

Here, AB is the height of a tower. CB=20m Now, tan 60 = AB/CB √3 = AB/20 AB = 20√3 Therefore, the... View Article

ABCD is an isosceles trapezium. if AB || CD, AB = 20 cm, CD = 10 cm and each of the non-parallel sides is 13 cm, then area of trapezium is

Given, ABCD is an isosceles trapezium. AB || CD AB = 20 cm CD = 10 cm Length of each leg of trapezium = 13 cm By the formula, the... View Article

S is a point on the side QR of triangle PQR such that PS is the bisector of angle QPR. then: A. QS = SR B. QP > QS C. QS > QP D. SR > RP

Answer: B. QP > QS According to the given condition, ∠QPS=∠RPS By external angle theorem, ∠PSQ=∠RPS+∠PRS... View Article

If P is a point lying on the line segment joining Q(1, 1) and R(4, 1) such that PQ = 3/7 QR, then find the coordinates of P.

Using section formula, if a point (x,y) divides the line joining the points (x1, y1) and (x2, y2) in the ratio m:n, then; Given, PQ = 3/7 QR... View Article

The centre of a circle S = 0 lies on 2x – 2y + 9 = 0 and S = 0 cuts orthogonally the circle x² + y² = 4. Then the circle must pass through the point

(a) (1, 1) (b) (-1/2, 1/2) (c) (5, 5) (d) (-4, 4) Solution: Let the circle be S: x2+y2+2gx+2fy+c = 0 ..(i) Centre... View Article

M	T	W	T	F	S	S
					1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30
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Archives

If excess of AgNO3 solution is added to 100 mL of a 0.024 M solution of dichlorobis (enthylenediamine) cobalt (III) chloride, how many moles of AgCl be precipitated?

Which of the following overlapping is not present in XeO3 molecule? (a) sp3+ px (b) sp3 + py (c) sp3 + pz (d) sp3 + s

Which of the following are basic oxides? Mn2O7,V2O3, V2O5, Cr2O3,CrO

Observe the number line given below and answer the questions. On jumping 4 units to the right of -2, we land at what point?

A tower stands vertically on the ground. From a point on the ground which is 20 m away from the foot of the tower is found to be 60º. The height of the tower is:

ABCD is an isosceles trapezium. if AB || CD, AB = 20 cm, CD = 10 cm and each of the non-parallel sides is 13 cm, then area of trapezium is

S is a point on the side QR of triangle PQR such that PS is the bisector of angle QPR. then: A. QS = SR B. QP > QS C. QS > QP D. SR > RP

If P is a point lying on the line segment joining Q(1, 1) and R(4, 1) such that PQ = 3/7 QR, then find the coordinates of P.

Find the equation of the parabola with vertex at the origin and focus at f(-2, 0).

Find the number of digits in the square roots of 1764.

What is the formula for monthly compound interest?

If hcf of two numbers is 1, the two numbers are called relatively or .

Find the value of k if the straight line 2x+3y+4+k(6x−y+12)=0 is perpendicular to the line 7x+5y−4=0.

Derivative of tan inverse x.

Differentiate cos 2x

Is 133 a prime number?

If the sum of the series 24, 20,16,…. is 60. Find the number of terms in the series.

If a + b + c = 0, then prove that a³+ b³+ c³= 3abc.

What percentage is 15 out of 50?

The centre of a circle S = 0 lies on 2x – 2y + 9 = 0 and S = 0 cuts orthogonally the circle x² + y² = 4. Then the circle must pass through the point

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