1. Which one of the following is the softest?
A. sodium
B. iron
C. aluminium
D. lithium
2. Which have the maximum density ?
A. Water
B. Benzene
C. Ice
D. Chloroform
3. Which one of the following gas is readily soluble in water at room temperature ?
A. chlorine
B. nitrogen
C. ammonia
D. carbon dioxide
4. Which is also called Stranger Gas ?
A. Xenon
B. Neon
C. Argon
D. Nitrous oxide
5. Oil of vitriol is
A. nitric acid
B. sulphuric acid
C. hydrochloric acid
D. phosphoric acid
6. Which is used in preparation of dynamite ?
A. glycerol
B. ethyl alcohol
C. methyl alcohol
D. glycol
7. What is Calcium sulphate ?
A. epsom salt
B. blue vitriol
C. gypsum salt
D. potash alum
8. Bleaching action of chlorine is by
A. decomposition
B. hydrolysis
C. reduction
D. oxidation
9. Which metal is heaviest ?
A. osmium
B. mercury
C. iron
D. nickle
10. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
A. paint
B. aluminium
C. brass
D. gun powder
ANSWER KEY: 1- (A), 2- (A), 3- (D), 4- (A), 5- (B), 6- (A), 7- (C), 8- (A), 9- (B), 10- (D).
Gud mrg,,,,,ayushi mam,,,,,,,thank sooo much
A d d a b a c d a d
Ur preparation was started from,,,
2014
Y r u asking this kumaar??
N wht abt uu??
Banks from 2013 Nov,,,Ssc from 2014 September,,,
Nthg ji….u r super,,,well performance in quizes,,,,Dats y iam asking,,,,share with me ur preparation strategy,,,
So y r u cmng towards SSC if u first choosd bank
Thank you
Refresh!!!
Osmium is a heaviest metal yrrr
Interest in central govt job,,,especially income tax,E.d
I m weakest student here in sa yrrrr even I need to follow uu
1-a-sodium
2-a. 1,000.00 kg/m³ = Water, Density
876.50 kg/m³ = Benzene, Density
Ice is similar to water, but lighter!
1.48 g/cm³ = Chloroform, Density
3-c-ammonia
4-a-xenon
5-b-
6-a
7-c
8-d
9–b
10-d
…….10/10……in 2 min
Yes,,,but mam choose mercury,,,
No,it's mercury
Answer to the question 8 is D … Because Cl in bleaching powder is Cl free radical which plucks the electrons from the material which it reacts… Thus oxidising that material.
Refer to lucent page338
Ya u r rit yrrr it is a oxidation process
Os is 76 and Hg is 80 …. So its mercury
CHCl3 which is chloroform is 1430 kg/m cube
A A D A B
A C A B D
_/_
Hiii sam
Hello ankit…I replied ur query yest nyt,hope u chkd that..
@Ayushi mam
Twinkel idhar aa k wah wah kro..hahahah
wah wah wah __/__
Hihihii…bht lamba lecture ho gaya ha na…I felt that
Ya I checked n I m so thank full to u for that thanxxxx alottttttt
hehehe…ni ni mujhe bht achha lga tbhi to wah wah ki..
Arey,,isme thanx wali koe baat ne hai…I just tried to guide u..hope.it will work for u..ATB
o.O chalo thanx..hope it will gonaa fruitful for u also..
Density =mass/volume then for a constant volume the density vl b min /max depends on mass now the mass of chloroform is higher than all others then y the density of chcl3 is not MX???frnds plzz clear me that which type of density v r talking abt? Is this relative density or only density??
Itna lamba likhne k lye talent b chahye that u HV sahi h carry on
Thanx .._/_
""DO THE WORK OTHERS ARE NOT WILLIN
G TO DO""
AND
""U WILL GET THE THINGS OTHERS WILL NEVER HAVE""
_/_ _/_
2nd highest density metal = osmium.
heaviest metal= mercury
Mod here????? Please reply..
you assumed volume is same, it is loophole in the solution
if you fix the volume the scenario will be different.
for example if there are 10 molecule of chloroform in 1 centimeter cube then there are 1000 water molecule in 1 centemeter cube.
so density of chloroform= 10x atomic mass of chloroform/ volume
and density of water molecule= 1000x atomic mass of water/ volume
Ohhhkkyyyy thanx bro
Har post mein galtiyan gain bhai… Chloroform ki density 1480 kg/ m3 hai …
Mam every post has some error … Here answer to question 8 is D … If you were talking about cl2 gas then also cl free radical causes oxidation. And
Densities are
water 999.97 kg/m³
Ice 934 kg/m³
Benzene 876.50 kg/m³
Chloroform 1490 kg/m³
So please change the answers …
ques 9 glat h… osmium is the heaviest
9 is osmium…
bhai last tym chemistry kb pdi thi :p
dkh hota kya h dnsity ka mtlab ye b hota ki mass or volume k numerick value lo or mutiply kr do.. molecular interactions pr bht jyada depend krti h … uske strcture pr… tre accrding to fr water or ice k density b same honi chaiye…. lkn aisa n hota bhai…
rat mat concept pakad
bhai khna kya chata h :p : D
then tell me the concept which tells us that water density is maximum.
I appreciate Ankit's doubt. do not criticize him.
and you have mentioned ( density= mass x volume) which is totaly wrong.
Thanks 4 corrctng me yrrr I HV commerce background hence weak in PC thanku for helping me
bhai mutiply k jgh divide kr le.. ho jti h typing m glti ;p
bhai water k max n hoti vo to agr tu relative pd rha h to reltve wtr k compzn m hoti h islye wter k max bolte h… koi or doubt ho ti btayo bhai
Good joke,,,ha ha ha
I m not joking kumaar I m really too weak in sbjcts yrrr
Bond hai yaar tu …. Tu jarur neta banega
Wtf ankit???
Atomic mass of osmium is 190.20 and atomic mass of mercury is 200.59
In fact osmium is the densest naturally occurring metal.
hehe….. bhai