Osmotic pressure of 0.02 M urea solution at \(27^{\circ} C\), is (given \(R=0.0821 atm L mol ^{-1} K^{-1}\) )

For the cell \(Ni(s)\ |\ Ni^{2+}\ (0.1M)\ ||\ Cu^{2+}\ (0.1M)\ |\ Cu(s)\), the cell potential will increase when :

Answer the question on the basis of passage given below :
There are some deposits of nitrates and phosphates in the earth’s crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under laboratory conditions, but microbes do it easily. Ammonia forms a large number of complexes with transition metals. Hybridisation easily explains the ease of sigma donation capability of NH₃ and PH₃. Phosphine is an inflammable gas, and it is prepared from white phosphorus.
Which of the following is the correct statement?

Read the passage carefully and answer the following questions
There are mainly four series of the transition metals, \(3 d\) series ( \(S c\) to Zn), \(4 d\) series (Y to Cd), \(5 d\) series ( La and Hf to Hg ) and 6d series which has \(A c\) and elements from \(R f\) to \(C n\). The two series of the inner transition metals; \(4 f\) (Ce to Lu) and \(5 f\) (Th to Lr) are known as lanthanoids and actinoids respectively. Their chemical properties are transitional between those of \(s\) and \(p\)-block elements. The transition metals (with the exception of Zn, Cd and Hg) are very hard and have low volatility. Their melting and boiling points are high. Transition metals have incomplete d subshell either in neutral atom or in their ions. With partly filled d orbitals these elements exhibit certain characteristic properties such as display of a variety of oxidation states, formation of coloured ions and entering into complex formation with a variety of ligands. The transition metals and their compounds are known for their catalytic activity.
The highest oxidation states shown by V , Fe and Ni respectively are __________ .

Amylose is a water-soluble part of starch. What is the percentage solubility of it?

What is the correct formula for "Mohr's salt"?

Name the reaction when Benzene is treated with ethanoyl chloride in the presence of anhydrous AlCl\(_3\)

Order and degree of the differential equation \(\left[1+\left(\frac{d y}{d x}\right)^3\right]^{\frac{5}{4}}=\frac{d^2 y}{d x^2}\) are:

The derivative of \(\cos ^{-1}\left(\frac{\sin x+\cos x}{\sqrt{2}}\right),-\frac{\pi}{4} < x < \frac{\pi}{4}\) with respect to \(x\) is :

The area of the region bounded by the curve \(x=y^2\), y-axis and the line y = 3 and y = 4 is:

The two positive numbers whose sum is 16 and the sum of whose squares is minimum then the positive numbers are :

Arrange the following steps of gel electrophoresis in correct order.
A. DNA fragments were forced to move towards anode under electric field through agarose gel
B. Staining DNA fragments with Ethidium Bromide.
C. DNA fragments separated according to their size.
D. Visualising them in UV rays
Choose the correct answer from the options given below:

The basic steps involved in the genetic modification of an organism inlcude -
(A) Identification of DNA with desirable genes
(B) Production and clinical trial of drugs
(C) Introduction of the identified DNA into the host
(D) Maintenance of introduced DNA in the host and transfer of the DNA to its progeny
Choose the most appropriate combination from the options given below.