In a closed insulated container a liquid is stirred with a paddle to increase
In a closed insulated container a liquid is stirred with a paddle to increase the temperature which of the following is true
Options
(a) ΔE = w ≠ 0, q = 0 (b) ΔE […]
AIPMT2002
A black body radiates 20 W at temperature 227⁰C. It temperature of the black body
A black body radiates 20 W at temperature 227⁰C. It temperature of the black body is changed to 727⁰C, then its radiating power will be
Options
(a) Lamp black (b) Platinum black (c) Highly […]
An ideal black body is equivalent to
An ideal black body is equivalent to
Options
(a) Hot sodium lamp (b) Tungsten filament (c) Hot lampblack (d) Small hole in a hollow sphere
Correct Answer:
Small hole in a hollow sphere
Explanation: […]
A body is placed in an insulating container at temperature 227⁰C.
A body is placed in an insulating container at temperature 227⁰C. In order to keep its temperature at 727⁰C, power of 60 watt is required. Then power required to keep its temperature at 1227⁰C will […]
Geometrical isomers differ in
Geometrical isomers differ in
Options
(a) position of functional groups (b) position of atoms (c) spatial arrangement of atoms (d) length of carbon chain
Correct Answer:
spatial arrangement of atoms
Explanation:
Geometrical isomers […]
Solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25 . Then fine out pKb of NH₄OH
Solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25 . Then fine out pKb of NH₄OH
Options
(a) 9.25 (b) 4.75 (c) 3.75 (d) 8.25
Correct Answer:
4.75
Explanation:
Solution […]
Which has highest pH
Which has highest pH
Options
(a) CH₃COOK (b) Na₂ CO₃ (c) NH₄Cl (d) NaNO₃
Correct Answer:
Na₂ CO₃
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Solubility of MX₂ – type electrolytes is 0.5 ˣ 10⁻⁴ mol/L.,
Solubility of MX₂ – type electrolytes is 0.5 ˣ 10⁻⁴ mol/L., then fine out Ksp of electrolytes
Options
(a) 5 ˣ 10⁻¹² (b) 25 ˣ 10⁻¹⁰ (c) 1 ˣ 10⁻¹³ (d) 5 ˣ […]
Reaction BaO₂(s) ⇌ BaO(s) + O₂(g) ; ΔH = +ve.In equilibrium condition,
Reaction BaO₂(s) ⇌ BaO(s) + O₂(g) ; ΔH = +ve.In equilibrium condition, pressure of O₂ depends on
Options
(a) increase in mass of BaO₂ (b) increase in mass of BaO (c) increase in […]
Cellulose is polymer of
Cellulose is polymer of
Options
(a) glucose (b) fructose (c) ribose (d) sucrose
Correct Answer:
glucose
Explanation:
Cellulose is a straight chain polysaccharide composed of D-glucose units joined by β-glycosidic linkage between C-1 […]