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अर्कज
Subject: Chemistry
, asked on 13/5/18
Solve this:
Answer
1
अर्कज
Subject: Chemistry
, asked on 13/5/18
Solve this:
Question No. 8
The water vapours present in the atmosphere form clouds by the process of
A. condensation
B. evaporation
C. freezing
D. Melting
Answer
1
अर्कज
Subject: Chemistry
, asked on 13/5/18
Solve this:
Question No. 10
The pressure of 1 mm Hg is equivalent to
A. 101.32 Pa
B. 133.32 Pa
C. 1.01 Pa
D. 1.33 Pa
Answer
1
Varun Gupta
Subject: Chemistry
, asked on 13/5/18
The vapour pressure of pure water and aqueous dilute soilution of ammonia are 25 mm Hg and 20 mm Hg respetively. Calculate the molality of the solution.
Answer
1
Romil Singh
Subject: Chemistry
, asked on 12/5/18
Solve this :
52. An empty vial weighs 55.32 g.
(a) If the vial weighs 185.56 g when filled with liquid mercury (d = 13.53 g/cm
3
), what is its volume ?
(b) How much would the vial weigh if it were filled with water (d = 0.997 g/cm
3
at 25
o
C)
Answer
1
Vansh Jain
Subject: Chemistry
, asked on 12/5/18
Plz tell the answer of questions 9 &10
Answer
1
Souvik Das
Subject: Chemistry
, asked on 12/5/18
Calculate the amount of Cao ( in kg ) that can be produced by heating 200kg of limestone will 95% purity ?
Answer
3
Souvik Das
Subject: Chemistry
, asked on 12/5/18
Lithium weighing 20g reacts with 30g of oxygen to form lithium oxide . find the mass of oxide formed and the mass of the excess reactant left
Answer
3
Souvik Das
Subject: Chemistry
, asked on 12/5/18
What mass of CCl4 will be produced when 100g of carbon reacts with 100g of Cl2 . also ,find the mass excess of reagent ?
Answer
4
Souvik Das
Subject: Chemistry
, asked on 12/5/18
If H and O constitute 5.8 % and 94.11 % of a compound , respectively , whose molar mass is 34g mol^-1 , then what will be the molecular formula of the compound ?
Answer
2
Keta
Subject: Chemistry
, asked on 11/5/18
Pls solve
Q.20. The maximum volume at N.T.P. is occupied by-
(A) 12.8 gm of
S
O
2
(B) 6.02
×
10
22
molecules of
C
H
4
(C) 0.5 mol of
N
O
2
(D) 1 gm-molecule of
C
O
2
Answer
2
Prakhar
Subject: Chemistry
, asked on 11/5/18
Q.9) The length of a rod is measured as 83.5 cm. The relative error in the length of the rod is
A) 0.1 %
B) 0.2 %
C) 0.01 %
D) 0.02 %
Answer
1
Prakhar
Subject: Chemistry
, asked on 11/5/18
I have no idea how to derive the answer. Pls help and explain as I want to strengthen basics.
Q
.
The
equation
of
state
of
a
real
gas
is
given
by
P
+
a
V
2
V
-
b
=
RT
Where
P
→
Pressure
,
V
→
Volume
,
T
→
Temperature
,
R
→
Universal
constant
then
,
dimension
of
constant
'
a
'
will
be
.
A
M
L
7
T
-
2
B
M
L
-
1
T
-
2
C
M
L
5
T
-
2
D
M
L
-
5
T
-
2
Answer
1
Prakhar
Subject: Chemistry
, asked on 11/5/18
Q. The dimensions of
∈
0
∂
ϕ
E
∂
t
,
, where the symbols have their usual meanings, are
A)
M
0
L
0
T
0
A
1
B)
M
0
L
2
T
0
A
C)
M
0
L
2
T
2
A
D)
M
0
L
1
T
1
A
0
Answer
1
Prakhar
Subject: Chemistry
, asked on 9/5/18
How many oxygen atoms in 12g of c10h16o?
Answer
3
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What are you looking for?
Question No. 8
The water vapours present in the atmosphere form clouds by the process of
A. condensation
B. evaporation
C. freezing
D. Melting
Question No. 10
The pressure of 1 mm Hg is equivalent to
A. 101.32 Pa
B. 133.32 Pa
C. 1.01 Pa
D. 1.33 Pa
52. An empty vial weighs 55.32 g.
(a) If the vial weighs 185.56 g when filled with liquid mercury (d = 13.53 g/cm3), what is its volume ?
(b) How much would the vial weigh if it were filled with water (d = 0.997 g/cm3 at 25o C)
Q.20. The maximum volume at N.T.P. is occupied by-
(A) 12.8 gm of
(B) 6.02 molecules of
(C) 0.5 mol of
(D) 1 gm-molecule of
A) 0.1 %
B) 0.2 %
C) 0.01 %
D) 0.02 %
A)
B)
C)
D)