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The spin only magnetic moment of Mn4+ is:

(A) 3 BM (B) 4 BM (C) 5 BM (D) 6 BM The Correct Answer is (B) 4 BM Solution: Mn4 = [Ar]3d3 Where, n = 3 Therefore, the spin only... View Article

In which of the following conjugated double bond is present?

(A) 1,2−Butadiene (B) 1,3−Butadiene (C) 1,3−Pentadience (D) Both (B) and (C) The Correct Answer is (D) Both (B) and (C) Solution:... View Article

Assertion: KCN reacts with methyl chloride to give methyl isocyanide.Reason: CN-$$ is an ambident nucleophile.

(A) Assertion is true, but Reason is false. (B) Assertion is false, but Reason is the correct statement. (C) Both Assertion and Reason are... View Article

BrO3- ion reacts with Br- to form Br2 in an acid medium. The equivalent mass of Br2 in this reaction is:

(A) (B) (C) (D) The Correct Answer is (A) Solution: n-factor = E.w. = Explore more such questions and answers at... View Article

Among KO2, AlO-2 BaO2 and NO+2 unpaired electron are present in:

(A) KO2 (B) BaO2 (C) NO+2 and BaO2 (D) KO2 and AlO-2 The Correct Answer is (A) KO2 Solution: KO2 contain one unpaired electron and it is... View Article

Which of the following can be the nth term of an AP?

(A) n3 + 1 (B) 4n + 3 (C) 3n2 + 5 (D) None OfThese The Correct Answer is (B) 4n + 3 Solution: 4n + 3 can be the nth term of an AP because... View Article

Which of the following is a wrong statement?

(A) Fast reactors use a moderator (B) Fast neutrons have energies above 1000eV (C) Slow or thermal neutrons have an energy of the order... View Article

An element having a bcc structure has 12.08 * 1023 unit cells. The number of atoms in these cells is:

(A) 12.08 * 1022 (B) 12.08 * 1023 (C) 24.16 * 1023 (D) 48.38 * 1023 The Correct Answer is (C) 24.16 * 1023 Solution: The Zeff of BCC... View Article

If the conductivity of 0.02 M solution of KCL at 298 K is 0.0248S cm-1.Calculate its molar conductivity.

(A) 112 Scm2mol-1 (B) 124 S cm2mol-1 (C) 136 S cm2mol-1 (D) 148 S cm2mol-1 The Correct Answer is (B) 124 S cm2mol-1 Solution: k... View Article

When acidified K2Cr2O7 solution is added to Sn2+ salt, then Sn2+ changes to:

(A) Sn (B) Sn+ (C) Sn3+ (D) Sn4+ The Correct Answer is (D) Sn4+ Solution: K2Cr2O7 is an oxidizing agent, which converts Sn2+ into its... View Article

The complex for which the calculation of crystal field splitting can be most easily done, by knowing its absorption spectrum, will be :

(A) (B) (C) (D) The Correct Answer is (C) Solution: In , the Ti(III) ion has one electron in 3d subshell. Thus, it is one... View Article

Which of the following product is obtained when a mixture of methane(CH4)and oxygen(O2) is passed through heated molybdenum (Mo2O3) at 543k at 100 atm pressure?

(A) Ethanal (B) Methanol (C) Methanal (D) Methanoic acid The Correct Answer is (C) Methanal Solution: When a mixture of methane and oxygen... View Article

By adding a small amount of KMnO4 to concentrated H2SO4, a green oily compound is obtained, which is highly explosive in nature. Identify the compound from the following options.

(A) MnO2 (B) MnSO4 (C) Mn2O3 (D) Mn2O7 The Correct Answer is (D) Mn2O7 Solution: By adding a small amount of KMnO4 to concentrated H2SO4,... View Article

Arrange the following compounds in decreasing order of their boiling points.Bromomethane (CH3Br), Bromoethane(CH3CH2Br), Bromoalkane (CH3CH2CH2Br), Bromobutane (CH3CH2CH2CH2Br)

(A) Bromomethane > Bromoethane > Bromoalkane > Bromobutane (B) Bromobutane > Bromoalkane > Bromomethane > Bromoethane (C)... View Article

Which of the following chemical compound contains a maximum number of Hydrogen atoms:

(A) H2O (B) CH4 (C) H2O2 (D) CuSO4.5H2O The Correct Answer is (B) CH4 Solution: Methane(CH4) is a colourless odourless gas, which... View Article

A man purchases two clocks A and B at a total cost of Rs 650. He sells A at 20% profit and B at a loss of 25% and gets the same selling price for both the clocks. What are the purchasing prices of A and B respectively?

Let the cost price of clock A be X and that of clock B be 650 -x. From the given information, we can write 120% of x = 75% of (650-x)... View Article

Integral xsinxsec^3x dx is equal to

∫x sinx sec3 x dx=∫x sinx (1/cos3x)dx =∫x tanx sec2x dx =x ∫secx (secx tanx)dx−∫[∫secx(secx tanx)dx]dx+C... View Article

What are x-intercept and y-intercept?

X- intercept: The x-intercept represents where the graph crosses the x-axis. The x-intercept of a line gives the idea about the point which... View Article

A train 100 meters long takes 6 seconds to cross a man walking at 5km/h in a direction opposite to that of the train. The speed of the train is

Given that, the length of a train = 100m = 100/1000 km = 1/10 km. Time = 6 sec = 6/3600 hr = 1/600 hr Let the speed of the train be x km/hr.... View Article

Two boys A and B find the jumble of n ropes lying on the floor. Each takes hold of one loose end randomly. If the probability that they are both holding the same rope is 1/101, then the number of ropes is equal to

As we know that a rope has two ends. Hence, for n ropes, the total number of ends = 2n. So, remaining ends = 2n-1. Hence, selecting one end... View Article