List of practice Questions

If 5 moles of an ideal gas expands from \( 10 \, L \) to a volume of \( 100 \, L \) at \( 300 \, K \) under isothermal and reversible conditions, then work, \( w \), is \( -x \, J \). The value of \( x \) is ______.
(Given \( R = 8.314 \, \text{J K}^{-1} \text{mol}^{-1} \))

From the vitamins \( A, \, B_1, \, B_6, \, B_{12}, \, C, \, D, \, E, \, \text{and} \, K \), the number of vitamins that can be stored in our body is ______.

M/s Ashoka Agency, Kanpur sent the following goods to M/s Kanpuria Brothers, Faizabad:
(1) Ganga Soap (120 tablets in each box) at Rs. 70 per dozen.
(2) 7 boxes Parachute Coconut Oil, each box contains 252 bottles of 200 ml @ Rs. 80 per dozen bottles.
(3) 32 tins Dalda Vanaspati Ghee (each tin of 5 kg) @ Rs. 35 per kg.
(4) 12 boxes Lifebuoy Soap (each box contains 10 dozen soap) @ Rs. 65 per dozen. 7.5% Trade discount is available to the customer.
In sending the goods:
(i) Packing expenses Rs. 12 per box (Rs. 2 per tin on Vanaspati Ghee).
(ii) Cart expenses Rs. 80.
(iii) Railway freight Rs. 320.
(iv) Insurance expenses Rs. 120.
Based on the above details, prepare the invoice in proper format.

The molarity of 1 L orthophosphoric acid (\( H_3PO_4 \)) having 70% purity by weight (specific gravity \( 1.54 \, \text{g cm}^{-3} \)) is ______ M.
(Molar mass of \( H_3PO_4 = 98 \, \text{g mol}^{-1} \))

Number of moles of \( H^+ \) ions required by 1 mole of \( MnO_4^- \) to oxidise oxalate ion to \( CO_2 \) is ____.

In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product is (+)_______.

Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is _______.

A compound (\( x \)) with molar mass \( 108 \, \text{g mol}^{-1} \) undergoes acetylation to give a product with molar mass \( 192 \, \text{g mol}^{-1} \). The number of amino groups in the compound (\( x \)) is ______.

r =k[A] for a reaction, 50% of A is decomposed in 120 minutes. The time taken for 90% decomposition of A is ______ minutes.

A diatomic molecule has a dipole moment of \( 1.2 \, D \). If the bond distance is \( 1 \, \text{Å} \), then fractional charge on each atom is ______ \( \times 10^{-1} \, \text{esu} \).
(Given \( 1 \, D = 10^{-18} \, \text{esu cm} \))

Consider the following elements.

Which of the following is/are true about A',B',C'andD' ? A. Order of atomic radii: \( B' < A' < D' < C' \)
B. Order of metallic character: \( B' < A' < D' < C' \)
C. Size of the element: \( D' < C' < B' < A' \)
D. Order of ionic radii: \( B^{+} < A^{+} < D^{+} < C^{+} \)
Choose the correct answer from the options given below:

Describe the Law of Diminishing Returns.

Explain the importance of filing.

Write four features of a co-operative bank.

What is the difference between Cheque and Hundi?

What is Cash Book? In Petty Cash Book arrangement explain the Imprest System.

Describe the main functions of the Reserve Bank of India.

Explain the mutual relationship between expenditure and savings and throw light on its social importance.

Function of commercial banks is to:

What is Net Profit?

State any two benefits of indexing.

What functions does the State Bank perform as a commercial bank?

What do you understand by crossing of cheque?