(A) Ultraviolet rays
(B) Infrared ways
(C) Beta rays
(D) Gamma rays
Ques 2. The property of a body when it resists any change in its motion in a straight path or at rest, is called __________.
Ques 3. Which of the following is used to dissolve noble metal?
(A) Nitric Acid
(B) Aqua regia
(C) Sulphuric acid
(D) Hydrochloric acid
Ques 4. Which of the following is known as ‘Devil fish'?
Ques 5. Which part of the human body is most affected by typhoid?
Ques 6. The halogen which is most reactive is __________.
Ques 7. Which chemical is used for the preservation of foods?
(A) Sodium chloride
(B) Sodium benzoate
(C) Potassium permanganate
(D) Boric acid
Ques 8. Rearing of silk worm for the production of silk is called _______.
Ques 9. Which part of body is responsible for the production of urea?
Ques 10. For which disease’s treatment radioactive Iodine is used?
(A) Thyroid disease
(B) Blood cancer
(D) Skin disease
Ques 11. Which chemical substance is present in tobacco?
Ques 12. Which corpuscles are mainly affected in leukemia?
(A) White blood corpuscles
(B) Red blood corpuscles
(C) Blood platelets
(D) Blood plasma
Ques 13. Cyclotron is a device which -------
(A) Provides energy charged particles.
(B) Measures the pollution level of vehicles
(C) Takes a three dimensional picture
(D) Analyzes the amount of water vapour in the atmosphere
Ques 14. “Fleming’s left–hand rule” is used to determine -----
(A) The current flow direction of the magnetic field
(B) The direction of induced current due to impact of magnetic field
(C) The direction of current motion in magnetic field.
(D) None of these
Ques 15. Which part of human head is associated with the beats of lungs and heart?
(A) Spinal cord
(D) Medulla oblongata
Solutions:1. (A) Ultraviolet rays are mainly used to find out invisible handwritings, forged documents and fingerprints?
2. (B) The property of a body when it resists any change in its motion in a straight path or at rest, is called Inertia.
3. (B) Aqua regia is used to dissolve noble metal like gold and platinum.
4. (D) Octopus is also known as Devil fish.
5. (D) The body part which is most affected by typhoid is intestine.
6. (B) The halogen which is most reactive is fluorine.
7. (B) Sodium benzoate is used for the preservation of foods.
9. (D) Liver is responsible for the production of urea.
8. (C) Rearing of silk worm for the production of silk is called Sericulture.
10. (A) Radioactive Iodine is used for the treatment of Thyroid disease.
11. (C) The chemical substance which is found in tobacco is nicotine.
12. (A) White blood corpuscles are mainly affected in leukemia.
13. (A) Cyclotron is a device which provides energy charged particles.
14. (C) “Fleming’s left–hand rule” is used to determine the direction of current motion in magnetic field.
15. (D) Medulla oblongata is associated with the beats of lungs and heart.
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