A. Oxygen
B. Hydrogen
C. Ozone
D. Carbondioxide
✅ The correct answer is option B.
Which among the following are used as components to produce Nitrolim, a widely used fertilizer in past?
A. Nitrogen & Limestone
B. Calcium Carbide and Nitrogen
C. Calcium Carbide & Carbon
D. Calcium Carbide and Limestone
✅ The correct answer is option B.
The aqueous solution of which among the following acids is called Vinegar?
A. Oxalic acid
B. Citric acid
C. Acetic acid
D. Hydrochloric acid
✅ The correct answer is option C.
Which among the following is the correct decreasing of bioelements in Human Body?
A. oxygen, hydrogen, Carbon, nitrogen, calcium, and phosphorus
B. oxygen, carbon, nitrogen, hydrogen, calcium, and phosphorus
C. oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
D. carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorus
✅ The correct answer is option C.
Which among the following happens in an oxidation reaction ?
A. Electrons are gained
B. Electrons are lost
C. Protons are gained
D. Protons are lost
✅ The correct answer is option B.
Identify the thermosetting plastic from the given options:
A. Polythene
B. Bakelite
C. PVC
D. Casseine
✅ The correct answer is option B.
White Phosphorous is represented by which among the following symbols?
A. P1
B. P2
C. P3
D. P4
✅ The correct answer is option D.
Which among the following is called Laughing Gas popularly?
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen penta oxide
D. Nitrogen
✅ The correct answer is option B.
Identify the non-metallic mineral from the given options:
A. Manganese
B. Magnesium
C. Silica
D. Bauxite
✅ The correct answer is option C.
Which among the following are constituents of Brass?
A. Zinc and Copper
B. Iron and Zinc
C. Copper and Nickel
D. Iron and Copper
✅ The correct answer is option A.