General Science - Online Test
Q1. Meter Bridge is used to
Answer : Option A
Explaination / Solution:
With a known resistance in one of the gaps, the meter bridge is used to determine the value of an unknown resistance by the formula,
where l is the null point.
Q2. The total energy of a particle, executing simple harmonic motion is
Answer : Option B
Explaination / Solution:
(as)
Thus total energy of the oscillator remains constant as displacement is regained after every half cycle.
no energy is dissipated then all the potential energy becomes kinetic and vice versa.
Figure below shows the variation of kinetic energy and potential energy of harmonic oscillator with time where phase φ is set to zero for simplicity
Q3. is an example of
Answer : Option B
Explaination / Solution:
Water present in the interstitial sites in a crystal lattice is known as interstitial water. They are not held by hydrogen bonding with the other elements. If they are bonded they are called H-bonded hydrates.
Barium chloride is a white crystalline powder. It contains two molecules of water. It is one of the most important water soluble salts of Barium.
Q4. Breeding crops with higher levels of vitamins and minerals or higher protein and healthier fats is called
Answer : Option D
Explaination / Solution:
Bio-fortification is the breeding of crops with higher levels of vitamins and minerals to improve public health. Nutritional quantity is increased for protein, vitamins and minerals.
Q5. If ‘a’ is aperture size (i.e., slit or hole) and λ the wave length formula for Fresnel distance is
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. If we wanted to cancel the Earth’s magnetic field by running an enormous current loop around the equator, which way would the current have to flow: or west to east?
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. Select the group which represents only critically endangered species (as per 2008 red list):
Answer : Option B
Explaination / Solution:
According to red data book 2008, Critically endangered is the highest conservation status animals. The Amur Leopard who has just over 60 individuals left in its population. The Cross River Gorillas are a population between 200 and 300 individuals. Hawksbill Turtle, Leatherback Turtle have all unknown population numbers.
Q8. Which is used in cancer therapy?
Answer : Option A
Explaination / Solution:
Cis Platin ( cis – [Pt(NH3)2(Cl)2] ) is a anti cancer drug.
Q9. Oral contraceptive pills contain estrogen and progesterone, that prevent
Answer : Option B
Explaination / Solution:
Oral contraceptive pill contain estrogen and progesterone that prevents the release of secondary oocyte from ovary. The secondary oocyte develops to female egg or ovum. Use of these pills prevents the ovum formation.
Q10.
Emf of the cell
at 298 K is
at 298 K is
Answer : Option D
Explaination / Solution:
