A Cerebrum
B Cerebellum
C Hypothalamus
D Thalamus
Explanation: The hypothalamus acts as the body\'s thermostat, regulating temperature and homeostasis.
A C6H12O6
B C12H22O11
C C2H5OH
D CH3COOH
Explanation: Glucose is a hexose sugar with the molecular formula C6H12O6.
A Ethanol
B Lactic acid
C Acetic acid
D Citric acid
Explanation: During anaerobic respiration, pyruvate is converted to lactic acid in muscle cells.
A NADH
B FADH2
C ATP
D Glucose
Explanation: Mitochondria produce ATP through cellular respiration, the cell\'s main energy currency.
A Predation
B Parasitism
C Competition
D Commensalism
Explanation: Commensalism is a symbiotic relationship where one organism benefits and the other is unaffected.
Explanation: Carbon has atomic number 6, meaning it has 6 protons in its nucleus.
A Neutron
B Proton
C Electron
D Alpha particle
Explanation: A neutron is a neutral subatomic particle found in the nucleus with no electric charge.
A Ionic bond
B Covalent bond
C Metallic bond
D Hydrogen bond
Explanation: NaCl is formed by the transfer of an electron from Na to Cl, creating an ionic bond.
A Hydrogen
B Oxygen
C Chlorine
D Carbon dioxide
Explanation: Zinc displaces hydrogen from HCl, producing zinc chloride and hydrogen gas.
Explanation: Carbon in methane forms four equivalent sigma bonds using sp3 hybridization.
A 6.022 x 10^23 particles per mole
B 6.022 x 10^22 particles per mole
C 3.011 x 10^23 particles per mole
D 1.602 x 10^-19 C
Explanation: Avogadro\'s number is 6.022 x 10^23, representing the number of particles in one mole.
A Law of conservation of mass
B Law of definite proportions
C Law of multiple proportions
D Gay-Lussac\'s law
Explanation: The law of conservation of mass states that total mass remains constant during a chemical reaction.
A -CHO
B -OH
C -COOH
D -CO-
Explanation: Aldehydes contain the -CHO (formyl) functional group bonded to at least one hydrogen.
A Fluorine
B Sodium
C Silicon
D Sulfur
Explanation: Fluorine is the most electronegative element on the Pauling scale with a value of 3.98.
A CH2O
B C2H4O2
C C3H6O3
D C6H12O6
Explanation: Dividing all subscripts in C6H12O6 by the greatest common divisor 6 gives CH2O.
A Red
B Blue
C Green
D Yellow
Explanation: Litmus paper turns red in acidic solutions due to the presence of excess H+ ions.
A Al2O3
B Na2O
C SO3
D CaO
Explanation: Al2O3 reacts with both acids and bases, which is the defining property of an amphoteric oxide.
A Aluminium
B Iron
C Copper
D Zinc
Explanation: Aluminium is extracted from molten alumina by electrolysis in the Hall-Heroult process.
A Starch
B Glucose
C Fructose
D Sucrose
Explanation: Starch is a polysaccharide composed of long chains of glucose units linked by glycosidic bonds.
A Dissolution of ammonium nitrate in water
B Burning of natural gas
C Neutralization of acid and base
D Condensation of steam
Explanation: Dissolving ammonium nitrate in water absorbs heat from surroundings, making it endothermic.