Practice General science mcq - general science mcq Online Quiz (set-2) For All Competitive Exams
Q-1) Lemon is citrus due to
(a)
(b)
(c)
(d)
Q-2) Which one of the following is a mixed fertilizer?
(a)
(b)
(c)
(d)
Q-3) Of the following ELISA Test is performed to test
(a)
(b)
(c)
(d)
Q-4) Pasteurization is related to
(a)
(b)
(c)
(d)
Q-5) A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperture 120°C , then
(a)
(b)
(c)
(d)
Rate of cooling of a body R = ${Δϴ}/t = {Aɛσ(T^4 - {T_O}^4)}/{mc}$
⇒ $R ∝ A/m ∝ \text"Area"/\text"Volume"[m = ρ×V]$
⇒ For the same surface area. $R ∝ 1/\text"Volume"$
Since Volume of cube < Volume of a sphere
⇒ $R_{cube} > R_{Sphere}$
i.e., the cube cools down at a faster rate.
Q-6) Sound waves travel fastest in
(a)
(b)
(c)
(d)
Q-7) Red Blood Corpuscles (RBCs) has colour due to
(a)
(b)
(c)
(d)
Q-8) While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
(a)
(b)
(c)
(d)
Q-9) Among the following vegetables, the maximum Vitamin C is found in
(a)
(b)
(c)
(d)
Q-10) Which part of human brain is concerned with the regulation of body temperature?
(a)
(b)
(c)
(d)
Q-11) Which of the following is not caused by deficiency of mineral nutrition?
(a)
(b)
(c)
(d)
Q-12) When the distance between the object and the plane mirror increases
(a)
(b)
(c)
(d)
Q-13) A drop of oil is placed on the surface of water. Which of the following statements is correct?
(a)
(b)
(c)
(d)
The surface tension of oil is less than that of water, so the oil spreads as a thin layer.
Q-14) Various functions like photosynthesis, storage, excretion performed by _____________.
(a)
(b)
(c)
(d)
Q-15) Which one of the following is the softest?
(a)
(b)
(c)
(d)
Q-16) Assertion (A):
In human body, the liver has an important role in fat digestion.
Reason (R):
Liver produces two important fat-digesting enzymes.
Code
(a)
(b)
(c)
(d)
Q-17) Consider the following statements. - The heart vibrates at infrasonic.
- The speed of sound is more in gas than in liquid and solid.
- Mach number is used to describe the speed of sound.
- Ultrasonic sound has frequency more than 20,000 Hz.
Of these statements.
(a)
(b)
(c)
(d)
Q-18) Which of the following is a measure of organic pollution of water –
(a)
(b)
(c)
(d)
Q-19) Which acid is found in Vinegar?
(a)
(b)
(c)
(d)
Q-20) Steps of Recombinant DNA technology are given below. - Identification and isolation of the genetic material.
- Fragmentation of DNA.
- Obtaining the foreign gene product.
- Downstream processing.
- Ligation of DNA fragmentation into the vector.
- Isolation of desired DNA fragments.
- Amplification of gene of interest.
- Transfer of Recombinant DNA into the host cell/organism.
The correct sequence of steps is
(a)
(b)
(c)
(d)
Q-21) Consider the following statements : - Among the nitrogenous fertilizers used, urea contains maximum percentage of N.
- The mixture of calcium sulphate and calcium dihydrogen phosphate is known as superphosphate of lime.
- Potassium magnesium sulphate is called the muriate of potash.
Which of the statements given above are correct?
(a)
(b)
(c)
(d)
Statement (1) and (2) are correct. Urea contains maximum percentage of N among various fertilizers used. The mixture of Ca(H2PO4) 2 and CaSO4 is sold as “super phosphate”. Statement (3) is wrong. Muriate is name for potassium chloride KCl.
Q-22) The process of development of organism like itself is called
(a)
(b)
(c)
(d)
Q-23) Which of the following is NOT an illustration of Newton's third law ?
(a)
(b)
(c)
(d)
A cricketer lower his hands while catching a ball to increase the time so as to decrease the force exerted by the ball on cricketer's hands. This is not an example of Newton's third law of motion.
Q-24) Bronze is an alloy of
(a)
(b)
(c)
(d)
Q-25) Which one among the following is the correct order of power consumption for light of equal intensity ?
(a)
(b)
(c)
(d)
Q-26) If an object undergoes a uniform circular motion, then its
(a)
(b)
(c)
(d)
Q-27) ‘Humus’ is an example of
(a)
(b)
(c)
(d)
Q-28) Which one of the following is most electropositive element?
(a)
(b)
(c)
(d)
Alkali metals are most electropositive in their respective period. i.e. they have maximum tendency to lose electron and form a cation.
Q-29) Who among the following discovered heavy water?
(a)
(b)
(c)
(d)
Q-30) Which one of the following series represents the correct path of blood circulation?
(a)
(b)
(c)
(d)
Blood flowsfrom right atrium to right ventricles and from here to lungs is called pulmonary circulation which precedes systemic circulation which carries deoxygenated blood from different tissues to right atrium.