Free MCQs & Online Quiz Practice for Exams

Q: Zinc rod acts as anode in the Daniell cell but acts as cathode when coupled with aluminum electrode because

A) Zn > Al

B) Zn < Al

C) Zn = Al

D) Zn = 0

Q: Electrolysis is a process in which the cations and anions are

A) Hydrated

B) Electrolyzed

C) Charged

D) Discharged

Q: The lead storage battery is a/an

A) Daniell cell

B) Voltaic cell

C) Dry cell

D) Electrolytic cell

Q: The electrode potential of the standard hydrogen electrode is chosen as

A) 0.00 V

B) 1 V

C) -1 V

D) 2 V

Q: A cathode has the reduction potential

A) Less than the anode

B) More than the anode

C) Same as that of anode

D) Zero

Q: The oxidation number of magnesium in MgCO₃ is

A) +3

B) +2

C) +1

D) 0

Q: Which of the following is the best suited stain to study chromosomes?

A) Iodine solution

B) Leishman's stain

C) Feulgen's stain

D) Aniline blue

Q: The 'Scavengers' or 'Digestive bags' of a cell are

A) Chromosomes

B) Centrosomes

C) Lysosomes

D) Ribosomes

Q: Following are the functions of cytoskeleton EXCEPT

A) Maintaining cell shape

B) Movement

C) Contraction

D) Respiration

Q: Identify the mismatch in the following pairs:

A) Mitochondria - cellular respiration

B) Lysosome - intra cellular digestion

C) Microfilament - cyclosis

D) Glyoxisome - deamination

Q: The most prominent cell organelle of a bacterial cell other than DNA is

A) Mesosome

B) Ribosome

C) Lysosomes

D) Mitochondrion

Q: The cell wall of prokaryotic cell (bacterial) is composed of

A) Lignin

B) Pectin

C) Cellulose

D) Murein

Q: The cell organelle in eukaryotic cell which is NOT bounded by a membrane is

A) Lysosomes

B) Centriole

C) Peroxisomes

D) Nucleolus

Q: In which part of the chloroplast the fixation of CO₂ results in the formation of sugars?

A) Envelope

B) Stroma

C) Thylakoid

D) Intergranum

Q: The organelle which is absent in animal cells is

A) Plastids

B) Centriole

C) Lysosomes

D) Nucleolus

Q: The special proteins which carry lipid-insoluble large molecules through pores of plasma membrane are called

A) Permeases

B) Catalases

C) Arginases

D) Amylases

Q: The membrane-enclosed spaces of endoplasmic reticulum are called

A) Lamellae

B) Cisternae

C) Stroma

D) Nucleolus

Q: All of the following refer to lysosomes EXCEPT

A) Slightly larger than mitochondria

B) Roughly spherical

C) Single membrane bounded

D) Contain powerful digestive enzymes

Q: Lysosomes are also called

A) Peroxisomes

B) Mesosomes

C) Phagosomes

D) Nucleolus

Q: In the leaves of green plants, peroxisomes are the sites of

A) Respiration

B) Photosynthesis

C) Photorespiration

D) Phototropism