A. Mercury
B. Zinc
C. Copper
D. Lead
✅ The correct answer is option D.
A molecule is a smallest part of matter which possesses all properties of original matter. A molecule is electrically _________?
A. Positve
B. Negative
C. either positive or negative
D. neutral
✅ The correct answer is option D.
A neutron , an electron, a proton and an alpha particle are moving with the same kinetic energy. Which of the following is correct order of their speeds?
A. Alpha Particle, Neutron, Proton, Electron
B. Electron, Proton , Neutron, Alpha Particle
C. Alpha Particle, Proton, Neutron, Electron
D. Neutron, Proton, Alpha Particle, Electron
✅ The correct answer is option A.
Whenever an alkali metal such as Lithium or Sodium reacts with water , which among the following gas is produced?
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.