ai test 2 Questions
Which of the following alkanes has 75% of carbon?
Which of the following phrases would be incorrect to use?
How much volume of oxygen will be required for complete combustion of 40 mL of acetylene (C2H2)? (All volume are measured at STP)
Given below are two statements: Statement-I: Screw gauge with a pitch of 0.5 mm is more accurate than 1 mm for same number of circular scale divisions. Statement-II: Higher pitch can make an instrument more accurate. In the light of the above stateme
A screw gauge of pitch 0.5 mm is used to measure the diameter of uniform wire of length 6.8 cm, the main scale reading is 1.5 mm and circular scale reading is 7. The calculated curved surface area of wire to appropriate significant figures is: [Screw
A student performs an experiment to measure the thickness of a slab with a vernier caliper whose 50 divisions of the vernier scale are equal to 49 divisions of the main scale. He noted that zero of the vernier scale is between 7.00 cm and 7.05 cm mar
In a vernier calipers, one main scale division is cm and division of the vernier scale coincide with division of the main scale. The least count (in cm) of the calipers is:
The period of oscillation of a simple pendulum in the experiment is recorded as 2.63 s, 2.56 s, 2.42 s, 2.71 s and 2.80 s respectively. The average absolute error is:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: If the percentage error in the measurement of radius of the sphere is 0.3%, then the permissible percentage error in its surface area i
If the length of rod A is cm and that of B is cm then the rod B is longer than rod A by:
The period of oscillation of a simple pendulum is given by where l is 100 cm and is known to have 1 mm accuracy. The time for 100 oscillations of the pendulum is found to be 200 s is measured by a stop watch of least count 0.1 s. The percentage error
In the density measurement of a cube, the mass and edge length are measured as kg and m, respectively. The relative error in the measurement of density is:
In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2%, 3% and 4% respectively. Then the maximum percentage error in the measurement of X, where will be:
If L = 2.331 cm, B = 2.1 cm, then L+B=?
The number of significant figures is kg is:
If units of length, mass and pressure are chosen as fundamental units, the dimension of time would be:
The position x of a particle at time “t” is given by Where and are:
Suppose refractive index is given as Where A and B are constants and is the wavelength, then dimensions of B are same as that of:
A force (F), length (L) and time (T) are taken as the fundamental quantities. Then what will be the dimension of density?
The force is given in terms of time t and displacement x by the equation . The dimensional formula of is:
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Dimensional constants are the quantities whose magnitudes are constant. Reason R: Dimensional constants are always unitless. In the lig
Dimensions of , where T is tension and is mass per unit length, are:
The wavelength associated with a moving particle depends upon pth power of its mass, qth power of its velocity v and rth power of Planck's constant h. Then, the correct set of values of p, q and r is:
If momentum (P), area (A) and time (T) are taken to be fundamental quantities, then the dimensional formula for energy is:
In a vernier calliper, when both jaws touch each other, zero of the vernier scale shift towards left and its 4th division coincides exactly with a certain division on main scale. If 50 vernier scale divisions equal to 49 main scale divisions and zero
If & then will be:
⚠️ Diagram Detected: The AI detected a chemistry or physics diagram here. Please upload the image manually using the editor.The graph for the equation is;
If in a a right-angled triangle, , then find tan A.
Value of tan() = .
Find dimensional formula of surface tension 'S'. Use where F is force and l is the length.
A packet contains silver powder having mass . Some additional powder of mass is added to the packet, the total mass of the powder now is;
The roots of equation are;
A physical quantity P is given by the relation . If t denotes the time, the dimensional formula of constant a is;
The value of is; (c = integration constant)
In a particular system, the unit of length, mass and time are chosen to be 10 cm, 10 g and 0.1 sec respectively. The unit of force in this system will be equivalent to:
In an expression .