Excess of Lead from human body can be removed by using which of the following chelating agents?

In the following examples, select the primary alkyl halide
(A). 1-Bromo-3-methylbutane
(B). 2-Bromo-2-methylbutane
(C). 3-Bromo propene
(D). Chlorophenyl methane
Choose the correct answer from the options given below:

In the following reaction, the product A is

Read the passage carefully and answer the Questions
Aldehydes, carboxylic acids and ketones are widespread in the animal and plant kingdoms.
They play a pivotal role in various biochemical processes of life. Their presence in nature adds fragrance and flavor. These compounds are widely used in food products, pharmaceuticals, paints, resins and other important product industries. These compounds are prepared by various laboratory methods, which mainly include oxidation, formylation, acylation and reduction. Due to the polar nature of the carbonyl group in aldehydes and ketones, they can exhibit different reactions like nucleophilic addition. They do exhibit redox and various condensation reactions which lead to the formation of various important compounds. On the other hand, the carboxylic acids are mainly prepared by oxidation and hydrolysis of different compounds. The carboxylic acid consists of a carbonyl group and the hydroxy group (attached to the carbonyl carbon atom). This makes it possible for the carboxylic acid to participate in various chemical reactions which involve cleavage of the C-OH bond and the O_H bond along with the reactions involving the complete -COOH group.
Propyne on hydration in presence of mercury ions produce

Match List-I with List-II 

List-I	List-II
(A) \(\Lambda _{ m }\) of \(K C l\) increases on dilution	\(I\).  is a linear. Graph
(B) \(\Lambda_m\) of \(CH _3 COOH\) increases on dilution	\(II\) is a non-linear graph
(C) \(\Lambda_m\) of \(K C l\) versus (molarity) \(^{1 / 2}\)	\(III\) due to increased degree of ionisation
(D) \(\Lambda_m\) of \(CH _3 COOH\) versus (molarity) \(^{1 / 2}\)	\(IV\) due to weakening of interionic attractions

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Which among the following metals shows 6 secondary valencies ?
(A) 1 mole of \(PdCl _2 \cdot 4 NH _3\) reacts with excess of \(AgNO _3\) to give 2 moles of AgCl precipitated
(B) 1 mole of \(NiCl _2 \cdot 6 H _2 O\) reacts with excess of \(AgNO _3\) to give 2 moles of AgCl precipitated
(C) 1 mole of \(PtCl _4 \cdot 2 HCl\) does not give reaction with \(AgNO _3\)
(D) 1 mole of \(CoCl _3 \cdot 4 NH _3\) reacts with excess of \(AgNO _3\) to give 1 mole of AgCl precipitated
(E) 1 mole of \(PtCl _2 \cdot 2 NH _3\) does not give reaction with \(AgNO _3\)
Choose the correct answer from the options given below :

Among the following, which is a non-essential amino acid?

A series LCR circuit is connected to a variable frequency 230 V source. \( L = 5\text{H}, C = 80 \mu\text{F} \) & \( R = 40 \, \Omega \). The potential drop across R at resonating frequency is :

How many aldol condensation products can be obtained when two aldehydes, both with a-hydrogen atoms undergo reaction?

Given a linear programming problem max \(z=22 x+18 y\) subject to \(x+y \leq 20\), \(360 x+240 y \leq 5760\) and \(x \geq 0, y \geq 0\). Its corner points are:

If the matrix \(\left[\begin{array}{ccc}3 & 2 a & -5 \\ 4 & 0 & b \\ -5 & 3 & 10\end{array}\right]\) is symmetric, then the value of \(5 a+2 b\) is :

Two cells with internal resistances \( r_1 \) and \( r_2 \) are connected across the load resistance R as shown in the figure. The values of \( r_1, r_2 \) and R are (1/2) \( \Omega \), (1/3) \( \Omega \) and (9/5) \( \Omega \), respectively. The current through R is:

Sodium chloride solution also called normal saline solution which is safe to inject intravenously has a concentration of :