(A) Chemical effect
(B) Magnetic effect
(C) Heating effect
(D) All of these three
Q. The SI unit of electric current is:
(A) Coulomb
(B) Ampere
(C) Joule
(D) None of these
Q. The SI unit of electric charge is:
(A) Coulomb
(B) Ampere
(C) Joule
(D) None of these
Answers:
1. (D) All of these three
2. (B) Ampere
3. (A) Coulomb
(A) Sodium and Potassium
(B) Sodium and Calcium
(C) Sodium and Chlorine
(D) Chlorine and Iodine
Q. The speed of sound in sea water is about:
(A) 15,00 m/s
(B) 16,00 m/s
(C) 17,00 m/s
(D) 18,00 m/s
Q. Sea water PH is limited to the range:
(A) 5.5 to 6.4
(B) 6.5 to 7.4
(C) 7.5 to 8.4
(D) 8.5 to 9.4
Answers:
1. (C) Sodium and Chlorine
2. (A) 15,00 m/s
3. (C) 7.5 to 8.4
(A) Magnetite and Pyrite
(B) Magnetite and Bauxite
(C) Hematite and Pyrite
(D) Hematite and Magnetite
Q. What is the chemical formula of Hematite?
(A) Fe2O3
(B) Fe3O4
(C) Fe2O4
(D) Fe3O2
Q. What is the chemical formula of Magnetite?
(A) Fe2O3
(B) Fe3O4
(C) Fe2O4
(D) Fe3O2
Answers:
1. (D) Hematite and Magnetite
2. (A) Fe2O3
3. (B) Fe3O4
(A) Igneous rocks
(B) Sedimentary rocks
(C) Metamorphic rocks
(D) Acid rocks
Q. The rock formed through the cooling and solidification of magma or lava is known as:
(A) Sedimentary rock
(B) Igneous rock
(C) Metamorphic rock
(D) Acid rocks
Q. Igneous rock is also known as:
(A) Magmatic rock
(B) Acid rock
(C) Basic rock
(D) Sedimentary rock
Answers:
1. (C) Metamorphic rocks
2. (B) Igneous rock
3. (A) Magmatic rock
(A) Exosphere
(B) Mesosphere
(C) Stratosphere
(D) Ionosphere
Q. The stratosphere layer is the second major layer of Earth’s atmosphere, just above the layer:
(A) Troposphere
(B) Mesosphere
(C) Ionosphere
(D) Exosphere
Q. The Mesosphere is the third major layer of the Earth’s atmosphere, directly above the:
(A) Exosphere
(B) Mesosphere
(C) Ionosphere
(D) Stratosphere
Answers:
1. (C) Stratosphere
2. (A) Troposphere
3. (D) Stratosphere