100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS

1.	यह प्रसंग पढ़ें, मिहिर और मोरपाल के जीवन अनुभवों के आधार पर टिप्पणी लिखें।जिस स्कल में बिताए समय को मैं अपने बचपन का सबसे खराब समय समझ करता था, शायद वही मोरपाल के लिए उसके जीवन का सबसे अच्छा समय होता था।’
Answer» समाज के दो पहलू मिहिर एवं मोरपाल दोस्त थे। दोस्ती इतनी घनी थी कि खाने की चीज़ भी आपस में बाँट लेते थे। मोरपाल गरीब घराने का लड़का है। उसके माँ-बाप खेत-मजूरी करते थे। घर में उसे कमर तोड़ मेहनत है। फिर भी वह रोज़ स्कूल आना पसंद करता है। पंद्रह किलोमीटर दूर किसी गाँव से रोज़ साइकिल चलाता स्कूल आता था। रोज़ छाछ का डिब्बा लेकर आता था। स्कूल आकर लेखक (मिहिर) का राजमा-चावल बडी चाव से खाता था। क्योंकिक्यों उसने पहले कभी यह देखा ही नहीं।हीं स्कूल के प्रति उसका लगाव कुछ खास है इतना कि बिना नागा रोज़ स्कूल आता था। रविवार की छुट्टी का दिन उसके लिए हफ़्ते का सबसे बुरा दिन था। किसी शादी में भी स्कूल के नीली-खाकी यूनीफॉर्म पहनते दिखाई पड़ता था। बेचारे के पास जो कमीज़पैंट का एक ही जोड़ा था, वह नीली-खाकी यूनीफॉर्म था। मोरपाल का स्कूल आठवीं के बाद छूट जाता है। वह आज भी अपने पिता की तरह वहीं खेती-मजूरी करता है। मिहिर पांडेय धनी परिवार का है। घर मे सारी सुविधाएँ हैं। वह स्कूल जाने से रोया करता था। रोज़ नए बहाने बनाता था। स्कूल से इतना नफ़रत करता था कि अगर स्कूल के रास्ते में पानी भर जाने के कारण स्कूल की छुट्टी हो जाए तो घर में वह नाचता रहता था। उसे स्कूल की नीली-खाकी यूनीफॉर्म से घृणा थी। उसे पहनना हमेशा टाल देता था। स्कूल में बिताए समय को वह अपने बचपन का सबसे खराब समझा जाता था। अपने राजमा-चावल के बदले मोरपाल का छाछ का डिब्बा अपना लेता था। समाज के दो विभिन्न पहलुओं को मिहिर और मोरपाल के माध्यम से हमारे सामने पेश किया है। मोरपाल के लिए घर में कोई सुविधा नहीं है, फिर भी वह पढ़ना चाहता है। जबकि मिहिर के लिए सुविधा होते हुए भी स्कूल जाना पसंद नहीं करता। स्कूल एवं यनीफॉर्म से गहरा प्यार रखते हुए भी मोरपाल को आठवीं से स्कूल छोडना पडता है और वह पिताजी की तरह खेतीमजूरी करने को विवश होता है। मगर विशेष रुचि न रखते हुए भी मिहिर ऊँचे पद पर पहूँचता है। यहाँ सामाजिक असमता का तस्वीर खींचखीं लिया है।

1.

यह प्रसंग पढ़ें, मिहिर और मोरपाल के जीवन अनुभवों के आधार पर टिप्पणी लिखें।जिस स्कल में बिताए समय को मैं अपने बचपन का सबसे खराब समय समझ करता था, शायद वही मोरपाल के लिए उसके जीवन का सबसे अच्छा समय होता था।’

Answer»

समाज के दो पहलू मिहिर एवं मोरपाल दोस्त थे। दोस्ती इतनी घनी थी कि खाने की चीज़ भी आपस में बाँट लेते थे। मोरपाल गरीब घराने का लड़का है। उसके माँ-बाप खेत-मजूरी करते थे। घर में उसे कमर तोड़ मेहनत है। फिर भी वह रोज़ स्कूल आना पसंद करता है। पंद्रह किलोमीटर दूर किसी गाँव से रोज़ साइकिल चलाता स्कूल आता था। रोज़ छाछ का डिब्बा लेकर आता था। स्कूल आकर लेखक (मिहिर) का राजमा-चावल बडी चाव से खाता था। क्योंकिक्यों उसने पहले कभी यह देखा ही नहीं।हीं स्कूल के प्रति उसका लगाव कुछ खास है इतना कि बिना नागा रोज़ स्कूल आता था। रविवार की छुट्टी का दिन उसके लिए हफ़्ते का सबसे बुरा दिन था। किसी शादी में भी स्कूल के नीली-खाकी यूनीफॉर्म पहनते दिखाई पड़ता था। बेचारे के पास जो कमीज़पैंट का एक ही जोड़ा था, वह नीली-खाकी यूनीफॉर्म था। मोरपाल का स्कूल आठवीं के बाद छूट जाता है। वह आज भी अपने पिता की तरह वहीं खेती-मजूरी करता है।

मिहिर पांडेय धनी परिवार का है। घर मे सारी सुविधाएँ हैं। वह स्कूल जाने से रोया करता था। रोज़ नए बहाने बनाता था। स्कूल से इतना नफ़रत करता था कि अगर स्कूल के रास्ते में पानी भर जाने के कारण स्कूल की छुट्टी हो जाए तो घर में वह नाचता रहता था। उसे स्कूल की नीली-खाकी यूनीफॉर्म से घृणा थी। उसे पहनना हमेशा टाल देता था। स्कूल में बिताए समय को वह अपने बचपन का सबसे खराब समझा जाता था। अपने राजमा-चावल के बदले मोरपाल का छाछ का डिब्बा अपना लेता था।

समाज के दो विभिन्न पहलुओं को मिहिर और मोरपाल के माध्यम से हमारे सामने पेश किया है। मोरपाल के लिए घर में कोई सुविधा नहीं है, फिर भी वह पढ़ना चाहता है। जबकि मिहिर के लिए सुविधा होते हुए भी स्कूल जाना पसंद नहीं करता। स्कूल एवं यनीफॉर्म से गहरा प्यार रखते हुए भी मोरपाल को आठवीं से स्कूल छोडना पडता है और वह पिताजी की तरह खेतीमजूरी करने को विवश होता है। मगर विशेष रुचि न रखते हुए भी मिहिर ऊँचे पद पर पहूँचता है। यहाँ सामाजिक असमता का तस्वीर खींचखीं लिया है।

2.	DEEPAK KUMAR SHARMA
Answer» Hii Please ask your question........

3.	The atomic numbers of element which has same group number are :-A. 4, 12 ,20B. 63, 65, 67C. 5, 14, 33D. 8, 17, 34
Answer» Correct Answer - A::B `K_(p)=K_(c )((1)/(12)xx600)^(-1)Deltan_(g)=1-(1+1)=-1` `K_(c ) = 50 K_(p)" therefore "K_(c )gt K_(p)`

4.	Which of the following graph is/are incorrect for 2p orbital ?A. B. C. D.
Answer» Correct Answer - B::D Phenol and Carboxylic acid is always more acidic than `H_(2)O`.

5.	At certain temperature, the equilibrium constant `(K_(c ))` is `1//16` for the reaction : `SO_(2)(g)+NO_(2)(g)iffSO_(3)(g)+NO(g)` If one mole of all the four gases are taken in 1 l container. Then select CORRECT statement(s) :A. Equilibrium concentration of NO(g) is 0.6 M.B. Equilibrium concentration of `NO_(2)(g)` is 1.6 M.C. Total moles of reaction mixture at equilibrium remains same.D. Moles of `NO_(2)(g)` greater than moles of NO(g) at equilibrium
Answer» Correct Answer - A::B `{:(Be,Mg,Ca,),(4,12,20,"(Group-II)"):}` Atomic number : [58 - 71] `rarr III B` group

6.	Identify the correct option is :A. trans-2-butene `lt` cis-2-butene stability of alkeneB. , Stability of carbocationC. , Heat of hydrogenationD. trans-2-butene `lt` cis-2-butene Heat of combustion
Answer» Correct Answer - A::C::D For 2p orbital Radial node = 2 - 1 - 1 = 0 and `R_((r ))v//r` r start from origin.

7.	For 3 moles of ammonia gas, which of the following is/are trur ? `[N_(A)=6 xx 10^(23)]`A. It contains 12 `N_(A)` atomsB. Volume at 1 atm and 273 K is 67.2LC. Number of molecules is `1.8 xx 10^(24)`D. Mass % of hydrogen is 17.65
Answer» Correct Answer - A::B::C PbO, ZnO `rarr` amphoteric oxides `N_(2)O rarr` neutraoxides `CO_(2),N_(2)O_(3), P_(4)O_(10),P_(4)O_(6)rarr` acidic oxides BaO = basic oxide

8.	Consider the following equilibrium reaction at `327^(@)C`. `A(g)+B(g)iffC(g)+D(l)`. Which of the following option(s) is/are correct regarding `K_(p)` and `K_(c )` relationship ? [Given : 1/R = 12]A. `K_(c )=50 K_(p)`B. `K_(p) lt L_(c )`C. `K_(p) = K_(c )`D. `K_(p) gt K_(c )`
Answer» Correct Answer - B::C::D `SO_(2)(g)+NO_(2)(g)iffSO_(3)(g)+NO(g)` `"mole 1 1 1 1"` `because Q=1 gt K_(C )` At equilibrium `"1+x 1+x 1-x 1-x"` mole `(1)/(16)=((1-x)/(1+x))^(2)implies (1-x)/(1+x)=(1)/(4)" "implies x=(3)/(5)` `therefore [NO] =1-(3)/(5)=0.4, [NO_(2)] =1+(3)/(5)=1.6`

9.	The gaseous reaction `2A(g) + nB(g) iff mC(g)` is represented by following curves. What is the value of `m + n`?
Answer» Correct Answer - m + n = 6 `{:(,2A,+,nB,iff,mC),("Initial moles",6,,10,,0),("At equilibrium",6-2x=4,,10-nx=8,,mx=4):}` `6-2x=4` `x = 1` `10-nxx1=8` n = 2 `mxx1=4`

10.	Excess intake of cobalt for longer periods leads to (A) Polycythemia (B) Megaloblastic anemia (C) Pernicious anemia (D) Microcytic anemia
Answer» (A) Polycythemia

11.	`H^(+)` ions are in excited state from where maximum 6 types of photons can be emitted. If E is the separation energy of electron in this excited state of `H^(+)` ion, then how many times of energy E is required to ionize Hydrogen atom ?
Answer» Correct Answer - 4 `6=(n(n-1))/(2)" "n=4` Separation energy, `E=+13.6 xx(z^(2))/(n^(2))=+13.6xx((2)^(2))/((4)^(2))=3.4 eV` l.E. of Hydrogen atom `=x xxE=13.6 eV` `x=(13.6)/(E)=4`

12.	`H_(2)S` and `SO_(2)` can be distinguished by:A. Litmus paperB. `MnO_(4)^(-)`C. `(CH_(3)COO)_(2)Pb`D. none of these
Answer» Correct Answer - C `H_(2)S,SO_(2)` both are acidic so cannot distinguish by litmus paper. `MnO_(4)^(-)` oxidising agentt, so both are oxidised to `SO_(4)^(2-)`. `Pb^(2+)+S^(2-)rarrPbS-("black ppt.")SO_(2)` will not give black precipitate so can be distinguished.

14.	An `alpha`-particle having kinetic energy x MeV falls on a Cu-foil. The shortest distance from the nucleus of Cu to which `alpha`-particle reaches is `1.67 xx 10^(-14) m`. What is the value of x ? [Given : Atomic number of Cu = 29, K = `9 xx 10^(9) Nm^(2)//C^(2)`]
Answer» Correct Answer - 5 `K.E.=(KZe.2e)/(r ), " "K.E.=(9xx10^(9)xx29xx2(1.6 xx 10^(-19))^(2))/(1.67xx10^(-14))=5Mev`

15.	Assertion: Systermatics is the branch of biology that deals with classification of living organisms. Rerson: The aim of classification is to group the organisms.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reson is false.D. If both assertion and reason are false.
Answer» Correct Answer - B Syntematics is the science of identification, naming and classification of the organisms into groups.

17.	Which of the following will not give positive chromyl chloride test?A. Sodium chloride, `NaCl`B. Mercuric chloride, `HgCl_(2)`C. Zinc chloride `ZnCl_(2)`D. Aniline hydrochloride`C_(6)H_(5)NH_(2).HCl`
Answer» Correct Answer - B `HgCl_(2)` due to covalent characters, sufficient chloride ions are not obtained.

18.	Determine the value of `((x+y^(2)))/(2)` for `Cr^(3+)` ion Where x = number of unpaired electron in `Cr^(3+)` y = Manetic moment of `Cr^(3+)`
Answer» Correct Answer - 9 Electronic configuration of `Cr^(3+)` `implies[Ar]3d^(3)4s^(@)` x = 3 unpaired electron `y = sqrt(3(3+2))=sqrt(15)` `(x+y^(2))/(2)" implies "(3+(sqrt(15))^(2))/(2)=9`

19.	a carbon compound containing two double bond
Answer» Ketene CH2=C=O

20.	मनुष्य में कार्बन डाइऑक्साइड का उत्सर्जन किससे होता है?A. वृक्कB. फेफड़ाC. त्वचाD. यकृत
Answer» Correct Answer - B

21.	கோட்டை என்னும் சொல் திராவிட மொழிகளில் எவ்வாறு எடுத்தாளப்பட்டுள்ளது?
Answer» கோட்டை என்வைட் சொல் தமிழில் கோமுடை நோக எனப்படுகிறது. மலையாளத்தில் கோட்ட கோடு லெப்படுகிறது.

22.	A right angled triangular prism of refractive index `mu_(1)` is kept floating on a liquid (surface) having refractive index `mu_(2)`. The condition such tat light incident normally passes through base of prism as shown in figure.A. `mu_(1)=Cos2theta//Costheta`B. `mu_(2)=Cos2theta//Costheta`C. `mu_(1)=Sin2theta//Costheta`D. `mu_(2)=Sin2theta//Sintheta`
Answer» Correct Answer - B `sin(90-theta)=(1)/(mu_(1))impliescostheta=(1)/(mu_(1))to(1)` `sin(90-2theta)=(1)/((mu_(1)//mu_(2)))` `cos2theta=(mu_(2))/(mu_(1))=(mu_(2))/((1//costheta))thereforemu_(2)=(cos2theta)/(costheta)`

23.	if `E=E_(0)sin(kz-omegat)` and `B=B_(0)(kz-omegat)` are electric and magnetic field produced by an electromagnetic wave travelling in +z direction in a medium. Then if `eta=(E_(0))/(B_(0))`, then the value of `eta` is `[mu`=permeability of a medium `epsilon=`permittivity of medium]A. `sqrt(in//H)`B. `sqrt(mu//en)`C. `sqrt(mu in)`D. `(1)/(sqrt(muin))`
Answer» Correct Answer - B Dimensional analysis.

24.	If a polarised light of intensity `l_(0)//2` is passed through two polariods `P_(1)` and `P_(2)` as shown in figure. Then the intensity of light observed by an observer on other side of `P_(2)` (if the polaroid `P_(1)` is rotated clockwise) as a funtion of angle `theta`.A. B. C. D.
Answer» Correct Answer - D `l=((l_(0))/(2))cos^(2)theta.sin^(2)theta=(l_(0))/(2)[(sin2theta)/(2)]^(2)=(l_(0))/(8)sin^(2)2theta`

25.	A small pulse is generated on a ring rotating with constant angular velocity `omega` as shown in the figure. Then the speed of pulse with respect to ground.A. `omegaR`B. `omegaR//2`C. `2omegaR`D. zero
Answer» Correct Answer - D `2Tsintheta=dmomegat^(2)R` `approx2Ttheta=mudlomega^(2)R` `approx2Ttheta=muR^(2)thetaomega^(2)R` `implies(T)/(mu)omega^(2)R^(2)` or `v_(wave)=omegaR` Note `v_(wave)` obtained is always with respect to medium. `thereforev_("wave/ground")=omegaR-omegaR` `=0`

26.	A point source of sound is vibrating with a frequency of 256 vibrations per second in air and propagating energy uniformly in all directions at the rate of 5 joules per second. Calculate the amplitude of the wave at a distance of 25 m from the source. Assume non-dissipative medium `[c=330m//s` & density of air `=1.29kg//m^(3)]`A. `0.8xx10^(-2)m`B. `0.8xx10^(-8)m`C. `10^(-6)m`D. `10^(-4)m`
Answer» Correct Answer - C `l=2pi^(2)rhovA^(2)upsilon^(2)=(w)/(4pir^(2))` `thereforeA=[(W)/(8pi^(3)rhovupsilon^(2))]^(1//2).(1)/(r)cong10^(-6)m`

27.	Which Ligand is strongest among them?A. `Cl^(-)`B. `Br^(-)`C. `I^(-)`D. `CN^(-)`
Answer» Correct Answer - D

Explore topic-wise InterviewSolutions in Current Affairs.

DEEPAK KUMAR SHARMA

The atomic numbers of element which has same group number are :-A. 4, 12 ,20B. 63, 65, 67C. 5, 14, 33D. 8, 17, 34

Which of the following graph is/are incorrect for 2p orbital ?A. B. C. D.

Identify the correct option is :A. trans-2-butene `lt` cis-2-butene stability of alkeneB. , Stability of carbocationC. , Heat of hydrogenationD. trans-2-butene `lt` cis-2-butene Heat of combustion

For 3 moles of ammonia gas, which of the following is/are trur ? `[N_(A)=6 xx 10^(23)]`A. It contains 12 `N_(A)` atomsB. Volume at 1 atm and 273 K is 67.2LC. Number of molecules is `1.8 xx 10^(24)`D. Mass % of hydrogen is 17.65

Consider the following equilibrium reaction at `327^(@)C`. `A(g)+B(g)iffC(g)+D(l)`. Which of the following option(s) is/are correct regarding `K_(p)` and `K_(c )` relationship ? [Given : 1/R = 12]A. `K_(c )=50 K_(p)`B. `K_(p) lt L_(c )`C. `K_(p) = K_(c )`D. `K_(p) gt K_(c )`

The gaseous reaction `2A(g) + nB(g) iff mC(g)` is represented by following curves. What is the value of `m + n`?

Excess intake of cobalt for longer periods leads to (A) Polycythemia (B) Megaloblastic anemia (C) Pernicious anemia (D) Microcytic anemia

`H^(+)` ions are in excited state from where maximum 6 types of photons can be emitted. If E is the separation energy of electron in this excited state of `H^(+)` ion, then how many times of energy E is required to ionize Hydrogen atom ?

`H_(2)S` and `SO_(2)` can be distinguished by:A. Litmus paperB. `MnO_(4)^(-)`C. `(CH_(3)COO)_(2)Pb`D. none of these

Give an account of the magnetic properties of transition metal complexes?

An `alpha`-particle having kinetic energy x MeV falls on a Cu-foil. The shortest distance from the nucleus of Cu to which `alpha`-particle reaches is `1.67 xx 10^(-14) m`. What is the value of x ? [Given : Atomic number of Cu = 29, K = `9 xx 10^(9) Nm^(2)//C^(2)`]

What are the advantages of CFT over VBT

Which of the following will not give positive chromyl chloride test?A. Sodium chloride, `NaCl`B. Mercuric chloride, `HgCl_(2)`C. Zinc chloride `ZnCl_(2)`D. Aniline hydrochloride`C_(6)H_(5)NH_(2).HCl`

Determine the value of `((x+y^(2)))/(2)` for `Cr^(3+)` ion Where x = number of unpaired electron in `Cr^(3+)` y = Manetic moment of `Cr^(3+)`

a carbon compound containing two double bond

मनुष्य में कार्बन डाइऑक्साइड का उत्सर्जन किससे होता है?A. वृक्कB. फेफड़ाC. त्वचाD. यकृत

கோட்டை என்னும் சொல் திராவிட மொழிகளில் எவ்வாறு எடுத்தாளப்பட்டுள்ளது?

If a polarised light of intensity `l_(0)//2` is passed through two polariods `P_(1)` and `P_(2)` as shown in figure. Then the intensity of light observed by an observer on other side of `P_(2)` (if the polaroid `P_(1)` is rotated clockwise) as a funtion of angle `theta`.A. B. C. D.

A small pulse is generated on a ring rotating with constant angular velocity `omega` as shown in the figure. Then the speed of pulse with respect to ground.A. `omegaR`B. `omegaR//2`C. `2omegaR`D. zero

Which Ligand is strongest among them?A. `Cl^(-)`B. `Br^(-)`C. `I^(-)`D. `CN^(-)`

`C_6H_5COOH`isA. phenyl carboxylix acidB. benzene - 1 -oic acidC. benzanoic acidD. None of these

Ligand should have ________ to form coordinate bond with Central metal.A. Vacant d-OrbitalB. Fully filled Orbital.C. Half filled OrbitalD. None of these

`C_6H_5COCH_3` isA. methyl benzyl etherB. ethyl phenyl etherC. methyl phenyl etherD. none of these

53 ppm of `Na_2CO_3` isA. 53 g of `Na_2CO_3` in `10^(6)` g of solutionB. 53 g of `Na_2CO_3` in `10^(9)` g of solutionC. 53 g of `Na_2CO_3` in 100 g of solutionD. none of these

Common name for propan-2-ol isA. n-propyl alcoholB. iso-propyl alcoholC. neo-propyl alcoholD. none of these

‘In ethane there are 6 covalent bonds. Five are strong σ bonds and the remaining one is a weak π bond.’ 1. Do you agree with this? 2. How is a bond different from π bond in the mode of formation?

Depending upon the type of overlapping, covalent bonds are of two types. a) Name them and give any two difference between them. b) Find the total number of these two types of bonds ’ in propane and 2-butene

In tank slaking, the second tank (60-75cm deep) is filled with:(a) Water(b) Lime-milk(c) Lime(d) Limestone

Densities for ________ and ________do not change significantly at ordinary conditions with pressure.(a) Gas, liquids(b) Liquids, solids(c) Solids, gas(d) None of the mentioned

Oxides of non-metals are....... in nature. a) acidic b) basic c) neutral d) none of the above.

Iron is galvanized by coating with......a) nickel b) tin c) zinc d) copper

Name the non-metal which is applied on wounds as an antiseptic. a) Iodine b) Nitrogen c) Chlorine d) Carbon

The velocity- time graph of car moving on a straight track is given below. The car weight 1000kg. The distance travelled by the car during the whole motion is:A. 50mB. 75mC. 100mD. 150m

Which of the following element will form basic oxides? a) Sulphur b) Nitrogen c) Sodium d) Carbon

The green coating on the top of the copper vessel is a mixture of .... a) CuSO4 and CuCO3 b) Cu(OH)2 and CO2 c) CuSO4 and CuO d) Cu(OH)2 and CuCO3

Why do copper objects develop a green coating in air?

The velocity- time graph of car moving on a straight track is given below. The car weight 1000kg. The braking force rewquired to boring the car to a stop with in one second from the maximum speed is:A. `(10000)/3N`B. `5000N`C. `10000N`D. `(5000)/3N`

Why does a copper vessel develop with green coating in rainy season?

Will Current flow more easily through a thick wire or thin wire of the same material when connected to the same source? Why?

Why does distilled water not conduct electricity whereas rain water does?

`BF_3 & C Cl_4` on reaction with water produce _____ & _______ respectively:A. `H_3BO_3+HF , H_2CO_3` + HClB. `H_3BO_3+HBF_4` , No reactionC. `H_3BO_3+HBF_4 , H_2CO_3 + HCl`D. `H_3BO_3+HF` No reaction

The ratio of P to V at any instant is constant and is equal to 1. for a monoatomic ideal gas undergoing a process. What is the molar heat capacity of the gas?A. `(3R)/2`B. `(4R)/2`C. `(5R)/2`D. `0`

Densities for and do not change significantly at ordinary conditions with pressure.(a) Gas, liquids(b) Liquids, solids(c) Solids, gas(d) None of the mentioned

`BF_3 & C Cl_4` on reaction with water produce _ & ___ respectively:A. `H_3BO_3+HF , H_2CO_3` + HClB. `H_3BO_3+HBF_4` , No reactionC. `H_3BO_3+HBF_4 , H_2CO_3 + HCl`D. `H_3BO_3+HF` No reaction

28.	`C_6H_5COOH`isA. phenyl carboxylix acidB. benzene - 1 -oic acidC. benzanoic acidD. None of these
Answer» Correct Answer - C

31.	53 ppm of `Na_2CO_3` isA. 53 g of `Na_2CO_3` in `10^(6)` g of solutionB. 53 g of `Na_2CO_3` in `10^(9)` g of solutionC. 53 g of `Na_2CO_3` in 100 g of solutionD. none of these
Answer» Correct Answer - A

35.	In tank slaking, the second tank (60-75cm deep) is filled with:(a) Water(b) Lime-milk(c) Lime(d) Limestone
Answer» The correct answer is (b) Lime-milk The explanation is: Lime is gradually added to water present in the first tank and stirred continuously. It results in formation of milk of lime, which is allowed to falls through a sieve into the second tank.

36.	Densities for ________ and ________do not change significantly at ordinary conditions with pressure.(a) Gas, liquids(b) Liquids, solids(c) Solids, gas(d) None of the mentioned
Answer» Right answer is (b) Liquids, solids The best explanation: Densities for liquids and solids do not change significantly at ordinary conditions with pressure.

37.	Oxides of non-metals are....... in nature. a) acidic b) basic c) neutral d) none of the above.
Answer» Oxides of non-metals are acidic in nature.

38.	Iron is galvanized by coating with......a) nickel b) tin c) zinc d) copper
Answer» Iron is galvanized by coating with zinc.

39.	Name the non-metal which is applied on wounds as an antiseptic. a) Iodine b) Nitrogen c) Chlorine d) Carbon
Answer» Iodine non-metal which is applied on wounds as an antiseptic.

40.	The velocity- time graph of car moving on a straight track is given below. The car weight 1000kg. The distance travelled by the car during the whole motion is:A. 50mB. 75mC. 100mD. 150m
Answer» Correct Answer - B Distance travelled by the car in 10 second and it is same as area under the v-t curve. `:. Distance =1/2xx2xx10+10xx5+1/2xx3xx10` `=10+50+15` `=75 m` Hence(B)

41.	Which of the following element will form basic oxides? a) Sulphur b) Nitrogen c) Sodium d) Carbon
Answer» Sodium element will form basic oxides.

42.	The green coating on the top of the copper vessel is a mixture of .... a) CuSO4 and CuCO3 b) Cu(OH)2 and CO2 c) CuSO4 and CuO d) Cu(OH)2 and CuCO3
Answer» (d) Cu(OH)₂ and CuCO₃