List of practice Questions

\(pH\) of a saturated solution of \(Ca(OH)_2\) is \(9\). The solubility product \((K_{sp})\) of \( Ca(OH)_2\) is: 

Which of the following is an amphoteric hydroxide?

The manganate and permanganate ions are tetrahedral, due to:

Under isothermal condition, a gas at 300 K expands from 0.1 L. to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is: [Given that 1 L bar=100J]

Conjugate base for Brönsted acids \(H_2O\) and \( HF\) are

Which is the correct thermal stability order for\( H_2E\) (E=O, S, Se, Te and Po)? 

Match the Xenon compounds in Column-I with its structure in Column II and assign the correct code:

Column I		Column II
A	\(XeF_4\)	I	pyramidall
B	\(XeFe_6 \)	II	square planar
C	\(XeOF_4  \)	III	distorted octahedral
D	\(XeO_3\)	IV	square pyramidal

Code:

Which will make basic buffer?

The number of \(\sigma \)and \(\pi\) bonds in pent-2-en-4-yne is: 

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]I- Sol.? (

Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:

Which of the following diatomic molecular species has only bonds according to Molecular Orbital Theory?

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:

Which of the following reactions are disproportionation reaction?
a)\(2Cu^{+}\rightarrow Cu^{2+}+Cu^{0}\)
\(b)3MnO_4^{2-}+4H^{+} \rightarrow2MnO_4^{-}+MnO_2+2H_2O\)
\(c)2KMnO_4\frac{\Delta}{\rightarrow}K_2MnO_4+MnO_2+O_2\)
\(d)2MnO_4^{-}+3Mn^{2+}+2H_2O \rightarrow 5MnO_2+4H^\oplus\)
Select the correct option from the following:

Among the following, the one that is not a green house gas is

If the rate constant for a first order reaction is k the time (t) required for the completion of 99% of the reaction is given by:

The value of x in the following chemical reaction is
\(C_3H_8 + xO_2 \rightarrow YCO_2 + zH_2O\)

The length, breadth and height of a room are 10 m, 10√2 m and 10 m respectively. The angle of elevation of a top corner of room from any point on a diagonal of the base of the room is

Choose the sentence that is grammatically correct.

Choose the sentence that is grammatically correct.

Directions: In each of the questions given below, each sentence is labelled with a letter. From the given choices, choose the most logical order of sentences that constructs a coherent paragraph.

1. Despite the awareness, some citizens fail to pay their taxes honestly.
2. One of the factors that impacts our country‘s economy is income- tax.
3. Awareness regarding this aspect of our economy is often made through the education system and media.
4. Most of these defaulters not only get into trouble, but they also create additional work for the income-tax department.

Fill in the blank with the correct options.
In our company, we don‘t accept such carelessly done work. _____

The number of EB – 5 visa applications, also known as 'cash for Green Card' visa to the U.S has increased in the last two years by about: