Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.	-CHO group is
Answer» `+Me and +IE`GROUPS `-Me and -IE` GROUP `+ME and -IE` group `-ME and +IE` group Answer :B

2.	…………. charge produce in phenol ring by resonance but due to resonance in nitrobenzene ………. charge is produce on ring.
Answer» SOLUTION :NEGATIVE , POSITIVE

3.	............... can be used to reduce particulate pollutant.
Answer» SOLUTION :ELECTROSTATIC PRECIPITATOR

4.	: C Cl_(2) is
Answer» an electrophile a free radical a nucleophile none of these Solution :Nucleophiles are ELECTRON RICH species and HENCE they are Lewis bases.

5.	......... are found toxic for mammals.
Answer» SODIUM chlorate Sodium arsenic Both (A) and (B) MERCURIC COMPOUNDS SOLUTION :Both (A) and (B)

6.	........ and ........ metals are use in photoelectric cells.
Answer» SOLUTION :CESIUM, POTASSIUM

7.	…….. and …….is the suffix of aldehyde and hydroxyl functional group
Answer» SOLUTION :AL and OL

8.	........ and ........ chemicals reacts as a poison for nervus system.
Answer» SOLUTION :ORGANOPHOSPHATE, CARBAMATE

9.	....... and ........ is formed by reaction of ozone present in the air with hydrocarbon.
Answer» SOLUTION :FORMALDEHYDE, acrolene

10.	…… an amorphous form of silica is used in filtration plants.
Answer» SOLUTION :Kieselghur

11.	........ alloys are used to form springs with high strength.
Answer» CU - Be Cu - Ba Cu - Sr Ba - Sr Answer :A

12.	..... alloy is used to prepare aeroplane, as they are light in weight.
Answer» BA - LI Be - Li Li - AL MG - Al Answer :D

13.	_______ alloy is used in making white metal bearings for motor engines?
Answer» SOLUTION :LITHIUM + LEAD

14.	_______ is used in making electrochemical cells
Answer» SOLUTION :LITHIUM + LEAD

15.	_______ alkaline earth metal do not import colour to a non-luminous flame.
Answer» SOLUTION :BERYLLIUM

16.	. Alkali metals give colouration when heated in Bunsen flame. Give reason.
Answer» Solution :When the alkali METALS salts moistened with concentrated hydrochloric acid are near a platinum wire in a flame, they show characteristic COLOURED flame LithiumCrimson red SodiumYellow PotassiumLilac RubidiumReddish violet CaesiumBlue The heat in the flame excites the valence ELECTRON to a higher energy level. W BACK to its actual energy level, the excess ne excess energy is emitted as light whose wa in the visible region produces colour.

17.	How does tubular secretion help in maintaining ionic and acid-base balance in body-fluids?
Answer» Carbonicacid CARBONATE `NA^(+)- K^(+)`PUMP Biscarbonate ANSWER :D

18.	........... acid is produce at the end of hydrolysis of SiCl_4.
Answer» Solution :SALICYLIC ACID - `SI(OH)_4`

19.	Whichis a non-aqueoussolution ?
Answer» Solution :`BR _(1) ` in `C CL _(4)`

20.	,A and other products formed are
Answer» SOLUTION :during ALDOL CONDENSATION if RINGS are to be formed6 membred , 5membredare PERMITTED

21.	. A and B are
Answer» none is correct SOLUTION : If we USE `H_2O_2`, aldehydes that FORM will be oxidised to give carboxylic ACIDS

22.	+2 oxidationstate of lead is more stablethan +4 oxidation state . Give reasons.
Answer» Solution :Among the elements of group 14, carbon does not have d- or f-electrons . Therefore , it does not show inert pair EFFECT. Consequently, it shows an oxidationstate of`+4`due to the presenceof TWO electrons in the s- andtwo electronsin the p-orbitalof thevalenceshell. In contrast , all other elements from Ge to Pb containeither dor both d- and f-electron increases, the inertpair effect becomesmore and more prominent. In other words,as we move dow the group from Ge to Pb, the STABILITY of +2 oxidation stateincreases whilethat of `+4` oxidationstate decreases.Therefore , the tendencyof Ge, SN and Pb to EXHIBIT +2 oxidation state increases with increasing atomic number in group 14.

23.	+2 oxidation state of lead is more stable than +4, because of
Answer» PENETRATION power octet configuration inert PAIR effect presence of VACANT orbitals Answer :C

24.	-100 cm^3 of 0.1 M HCl and 100 cm^2 of 0.1.M NaOH solutions are mixed in a calorimeter. If the heat liberated is "Q" K.Cal, the heat of neutralization (DeltaH) (in K.Cal) of HCl_((aq)) and NaOH_((aq)) is
Answer» `10 Q` `-100Q` `-50 Q ` `-10 Q` ANSWER :B

25.	+1 oxidation state is stable for the element
Answer» B AL GA TI ANSWER :D

26.	^^=^^ ^(0)-bsqrt(c) is called as
Answer» FARADAY's EQUATION DEBYE-Huckel-Onsagar's Equation Henderson's Equation None Solution :This is CALLED as Debye -Huckel-Onsager's equation.

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