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Siya Talwar
Subject: Science
, asked on 21/12/17
Solve this:
Q.5. Thermal energy and temperature are ______ properties of a substance
(A) physical
(B) chemical
(C) mechanical
(D) all of the above
Answer
2
Siya Talwar
Subject: Science
, asked on 20/12/17
Solve this:
Q.54. Celcius scale divides two fixed points (lower fixed point and upper fixed point) into
(A) 180 parts
(B) 212 parts
(C) 100 parts
(D) 32 parts
Answer
1
Siya Talwar
Subject: Science
, asked on 20/12/17
Solve this:
Q.49. 233 K is equal to
(A) 40
°
F
(B) - 40
°
F
(C) 172
°
F
(D) - 172
°
F
Answer
1
Santanu Sahoo
Subject: Science
, asked on 16/12/17
How is a tandoor cooked? Explain in detail.
Answer
3
Shreyansh Chakranarayan
Subject: Science
, asked on 14/12/17
Why cant heat from a fire transfer through convection?
Answer
1
Udiasmi Chakraborty
Subject: Science
, asked on 2/12/17
What is the difference between a splinter and a matchstick ?
Answer
1
Shivam Gupta
Subject: Science
, asked on 27/11/17
Sir
Q4. If
t
⇀
×
L
⇀
=
0
for a rigid body, where
t
⇀
= resultant torque and
L
⇀
= angular momentum about a point and both are non-zero. Then
Choose one :
∙
L
⇀
= constant
∙
|
L
⇀
| = constant
∙
|
L
⇀
| = will increase
∙
|
L
⇀
| = may increase
Answer
2
Damaraju Venkata Nagendra
Subject: Science
, asked on 10/11/17
Ans12
Answer
1
Damaraju Venkata Nagendra
Subject: Science
, asked on 9/11/17
Q12. The melting and boiling point of four different substances are shown in the table. The room temperature is
30
°
C
.
S
u
s
tan
c
e
M
e
l
t
i
n
g
p
o
i
n
t
(
°
C
)
B
o
i
l
i
n
g
P
o
i
n
t
(
°
C
)
P
-
114
80
Q
-
210
-
196
R
-
40
360
S
330
1750
Which of the following statement(s) are incorrect about the data given in the table?
(i) Substance P is in solid state at room temperature.
(ii) Substance Q is in liquid state at room temperature.
(iii) Substance R is gas at
-
150
°
C
and solid at
-
220
°
C
.
(iv) Substance S is in solid state at room temperature.
A. (i) and (ii) only.
B. (i),(ii) and (iii) only.
C. (iii) and (iv) only.
D. (i),(ii),(iii) and (iv).
Answer
1
Damaraju Venkata Nagendra
Subject: Science
, asked on 8/11/17
12. A solid substance is placed in a boiling tube and heated steadily. The temperature-time graph of the substance is shown in figure. At which labelled point would the substance be a mixture of liquid and gas?
(A) 1
(B) 2
(C) 3
(D) 4
Answer
1
Damaraju Venkata Nagendra
Subject: Science
, asked on 8/11/17
Ans23
Q.23. A U tube immersed in ice water as shown in the figure What you observe after sometime ?
A. P and Q will move downwards.
B. P and Q will move upwards.
C. P will move upwards and Q will move downwards.
D. P will move downwards and Q will move upwards.
Answer
1
Damaraju Venkata Nagendra
Subject: Science
, asked on 8/11/17
.ans 16
Answer
4
Damaraju Venkata Nagendra
Subject: Science
, asked on 7/11/17
Ans17
Answer
2
Damaraju Venkata Nagendra
Subject: Science
, asked on 7/11/17
Ans16
Answer
1
Scientist 😍😍
Subject: Science
, asked on 17/10/17
What is indicated by a soil with dark brown or black colour??
Answer
2
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What are you looking for?
Q.5. Thermal energy and temperature are ______ properties of a substance
(A) physical
(B) chemical
(C) mechanical
(D) all of the above
Q.54. Celcius scale divides two fixed points (lower fixed point and upper fixed point) into
(A) 180 parts
(B) 212 parts
(C) 100 parts
(D) 32 parts
Q.49. 233 K is equal to
(A) 40
(B) - 40
(C) 172
(D) - 172
Q4. If for a rigid body, where = resultant torque and = angular momentum about a point and both are non-zero. Then
Choose one :
= constant
| | = constant
|| = will increase
|| = may increase
Which of the following statement(s) are incorrect about the data given in the table?
(i) Substance P is in solid state at room temperature.
(ii) Substance Q is in liquid state at room temperature.
(iii) Substance R is gas at and solid at .
(iv) Substance S is in solid state at room temperature.
A. (i) and (ii) only.
B. (i),(ii) and (iii) only.
C. (iii) and (iv) only.
D. (i),(ii),(iii) and (iv).
(A) 1
(B) 2
(C) 3
(D) 4
Q.23. A U tube immersed in ice water as shown in the figure What you observe after sometime ?
A. P and Q will move downwards.
B. P and Q will move upwards.
C. P will move upwards and Q will move downwards.
D. P will move downwards and Q will move upwards.