Chemistry-
General
Easy
Question
Statement-1 : Silicones are resistant to heat, oxidation and most chemicals
Statement-2 : The silicones(a) have stable silica-like six electron owing to high bond energy of Si – O bond and (b) have high strength of Si – C
- Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
- Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1
- Statement-1 is True, Statement-2 is False
- Statement-1 is False, Statement-2 is True
The correct answer is: Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
Related Questions to study
chemistry-
Statement-1 : Boron forms only covalent compounds
Statement-2 : Due to small size of boron, the sum of its first three ionisation enthalpies very high
Statement-1 : Boron forms only covalent compounds
Statement-2 : Due to small size of boron, the sum of its first three ionisation enthalpies very high
chemistry-General
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chemistry-General
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ConcH2SO4 cannot be used to prepare HBr from NaBr because it –
ConcH2SO4 cannot be used to prepare HBr from NaBr because it –
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Three allotropes (A), (B) and (C) of phosphorous in the following change are respectively 
Three allotropes (A), (B) and (C) of phosphorous in the following change are respectively
chemistry-General
chemistry-
The molecular shapes of diborane is shown: Consider the following statements for diborane 
1) Boron is approximately sp3 hybridised
2) B-H-B angle is 180°
3) There are two terminal B-H bonds for each boron atom
4) There are only 12 bonding electrons available Of these statements –
The molecular shapes of diborane is shown: Consider the following statements for diborane
1) Boron is approximately sp3 hybridised
2) B-H-B angle is 180°
3) There are two terminal B-H bonds for each boron atom
4) There are only 12 bonding electrons available Of these statements –
chemistry-General
chemistry-
Which two of the following salts are used for preparing iodized salt–
i) KIO3
ii) KI
iii) I2
iv) HI
Which two of the following salts are used for preparing iodized salt–
i) KIO3
ii) KI
iii) I2
iv) HI
chemistry-General
chemistry-
Which one of the following oxy acid of fluorine exists ?
Which one of the following oxy acid of fluorine exists ?
chemistry-General
chemistry-
Thermite is a mixture of –
Thermite is a mixture of –
chemistry-General
chemistry-
Which of the following represents the correct order of increasing pKa values of the given acids –
Which of the following represents the correct order of increasing pKa values of the given acids –
chemistry-General
chemistry-
Producer gas is a mixture of –
Producer gas is a mixture of –
chemistry-General
physics-
Two points of a rigid body are moving as shown. The angular velocity of the body is
Two points of a rigid body are moving as shown. The angular velocity of the body is
physics-General
physics-
A hinged construction consists of three rhombs with the ratio of sides 5:3:2. Vertex A3 moves in the horizontal direction at a velocity v. Velocity of A2 is
A hinged construction consists of three rhombs with the ratio of sides 5:3:2. Vertex A3 moves in the horizontal direction at a velocity v. Velocity of A2 is
physics-General
physics-
A particle starts from the point (0m, 8m) and moves with uniform velocity of 
. After 5 seconds, the angular velocity of the particle about the origin will be :
A particle starts from the point (0m, 8m) and moves with uniform velocity of . After 5 seconds, the angular velocity of the particle about the origin will be :
physics-General
physics-
A uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of 20° to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above. Is there a torque acting on it, and if so in what direction?
A uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of 20° to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above. Is there a torque acting on it, and if so in what direction?
physics-General
physics-
A uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of 20° to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above. What is the direction of the rod's angular momentum vector (calculated about its lower end)?
A uniform rod is fixed to a rotating turntable so that its lower end is on the axis of the turntable and it makes an angle of 20° to the vertical. (The rod is thus rotating with uniform angular velocity about a vertical axis passing through one end.) If the turntable is rotating clockwise as seen from above. What is the direction of the rod's angular momentum vector (calculated about its lower end)?
physics-General
