The process of dissolving an acid or base in water is ………….. process.
A) endothermic
B) exothermic
C) isothermal
D) adiabatic
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In a silicon transistor the base current is changed by `20 mu A`. This results in a change of 0.02 V in the base to emitter voltage and a changed of 2
Correct Answer - (a)`r_(b) 1000 Omega beta = 100, g_(m) = 0.1 Omega^(-1)`, (b) `A_(v) = 500`
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In the circuit shown in fig the base current `I_(B)=5.0muA`, base resistor `R_(B)=1.0MOmega` collector resistor `R_(c)=1.0kOmega` the collector curren
Correct Answer - (i) No (ii) Can be used as ampifier
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175 litres of a solution contains `88%` of acid and the rest water. How many liters of water must be added such that the resulting mixture contains `2
Correct Answer - 25 litres
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W, P, H and A are whole surface area, perimeter of base, height and area of the base of a prism respectively. The relation between W, P, H and A is __
Correct Answer - `W=P xx H +2A`
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If s is the perimeter of the base of a prism, n is the number of sides of the base, S is the total length of the edges and h is the height, then S = _
Correct Answer - nh + 2s
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Hind-II always cut DNA molecules at a particular point by recognising a specific sequence of six base pairs. This specific base sequence is known as t
Correct Answer - Recognition sequences
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Mixing of an acid or base with water result in decrease in the concentration of HO/OH per unit volume is called
Correct option is D) dilution
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Pair of strong acid and strong base from the following is
D) HCl, NaOH
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When acid reacts with base it forms salt and water then the reaction is called
C) Neutralization
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a. Benzoic acid, Phenol, Picric acid, Salicylic acid (pka values). b. Acetaldehyde, Acetone, Methyl tert butyl ketone (reactivity towards NH2OH).
(a) Picric acid < salicylic acid < benzoic acid (b) Methyl tert – butyl ketone < acetone< Acetaldehyde (c) ethanol < ethanoic acid < benzoic acid (boiling point of carboxylic acids is higher than alcohols due to extensive hydrogen...
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