(A) 1.66054×10–15 kg
(B) 1.66054×10–19 kg
(C) 1.66054×10–23 kg
(D) 1.66054×10–27 kg
The answer is: (D) 1.66054×10–27 kg
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The presence of impurities ________ the freezing point of water.
(A) increases
(B) decreases
(C) accelerate
(D) do not have any effect on
The answer is: (B) decreases
Covid-19 was caused by a
(A) Fungus
(B) Virus
(C) Bacterial
(D) None of these
The answer is: (B) Virus
Covid-19 was caused by a virus and antibiotics do not work against viruses.
Isotopes are atoms whose nucleus have the same number of _____ but different number of _____.
(A) protons, neutrons
(B) protons, electrons
(C) neutrons, electrons
(D) electrons, positrons
The answer is: (A) protons, neutrons
Which of the following is one of the parts of the hindbrain?
(A) Hypothalamus
(B) Cerebellum
(C) Spinal cord
(D) None of these
The answer is: (B) Cerebellum
The cerebellum is a major structure of the hindbrain that is located near the brainstem.
The mass number is the total number of _____ and _____ in nucleus of an atom.
(A) protons, neutrons
(B) protons, electrons
(C) neutrons, electrons
(D) electrons, positrons
The answer is: (A) protons, neutrons
The boiling point of alcohol is
(A) 71 °C
(B) 75 °C
(C) 79 °C
(D) 83 °C
The answer is: (C) 79 °C
There are ________ ventricles in the brain.
(A) 5
(B) 4
(C) 3
(D) 1
The answer is: (B) 4
There are 4 ventricles in the brain. Their main function is to produce and secrete cerebrospinal fluid to protect and maintain your central nervous system.
If we add salt to the pure water, its boiling point will
(A) increase
(B) decrease
(C) remain same
(D) none of these
The answer is: (A) increase
An instrument used to measure gas pressure is called
(A) ammeter
(B) barometer
(C) galvanometer
(D) manometer
The answer is: (D) manometer