General Science Questions (MCQs) for Competitive Exam
Which one of the following is not an antioxidant?
(A) Vitamin E
(B) Selenium
(C) Lycopene
(D) Aspartame
Correct Answer : D
Explanation :
All of the following are peroxidases.
(A) Vitamin E
(B) Selenium
(C) LycopeneDue to which behavior of the barometer which measures the atmospheric pressure, "thunderstorm is coming" is predicted?
(A) the barometer reading rises slowly
(B) the barometer reading slowly goes down
(C) barometer reading rises suddenly
(D) barometer reading rises suddenly
Correct Answer : D
Explanation :
A falling barometric pressure, detected by a barometer, signals an approaching thunderstorm. This drop indicates unstable atmospheric conditions, often preceding stormy weather. Meteorologists use barometric readings to predict thunderstorms, as the decrease in pressure signifies the likelihood of imminent weather disturbances and allows for timely weather warnings.
Which is used to make synthetic fibers?
(A) HCl
(B) Bleaching powder
(C) chlorine
(D) NaOH
Correct Answer : D
Seed therapy is used to treat what?
(A) aids
(B) tuberculosis
(C) cancer
(D) asthma
Correct Answer : C
Explanation :
Radiation seed therapy, especially with Cesium-131, is an innovative tool in the fight against cancer.
First mammal to be cloned was -
(A) Sheep
(B) Goat
(C) Rat
(D) Frog
Correct Answer : A
Explanation :
Dolly (5 July 1996 – 14 February 2003) was a female domestic sheep, and the first mammal cloned from an adult somatic cell using the process of nuclear transfer.
The indigenously made Atmospheric Water Generator (AWG) by which Navratna company can make water from the moisture in the atmosphere?
(A) Gail India Limited
(B) Bharat Electronics Limited
(C) Bharat Heavy Electronics Limited
(D) steel authority of India
Correct Answer : B
Which is called the emergency hormone in the human body?
(A) Thyroxin
(B) Insulin
(C) Adrenaline
(D) Progesterone
Correct Answer : C
Explanation :
1. It is secreted in the adrenal gland into the medulla as well as in some neurons of the central nervous system.
2. It is known as an emergency hormone because it initiates an instant response that causes the person to think about the stress and react quickly.
A copper disc has a circular hole in the center when the copper disc is heated then the diameter of the hole is-
(A) will remain the same
(B) will decrease
(C) will increase
(D) will depend on other factors
Correct Answer : B
Explanation :
When a copper disc with a circular hole in the center is heated, the diameter of the hole will generally increase. This phenomenon occurs due to the expansion of the copper material as it is heated. When a material is heated, its particles gain energy and move more vigorously, leading to an increase in volume, and consequently, an increase in the diameter of the hole and the entire disc. The exact amount of expansion would depend on factors such as the temperature increase and the material properties of copper.
The escape velocity of the Earth is?
(A) 15.0 km/sec
(B) 21.1 km/sec
(C) 7.0 km/sec
(D) 11.2 km/sec
Correct Answer : D
Explanation :
1. The lowest velocity used to escape the gravitational pull of the Earth is called escape velocity.
2. The escape velocity of the Earth is 11.2 km/second.
Which of the following shows the correct relationship?
(A) 1 volt = 1 joule x 1 coulomb
(B) 1 volt = 1 joule / 1 coulomb
(C) 1 volt = 1 coulomb/1 joule
(D) 1 volt = 1 joule / 1 coulomb
Correct Answer : B
Explanation :
1 volt = 1 joule / 1 coulomb
This equation represents the definition of voltage (in volts). It states that one volt is equal to one joule of energy per one coulomb of charge. Voltage measures the electric potential difference between two points and is a fundamental concept in electrical physics.
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Vikram Singh
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