Free MCQs & Online Quiz Practice for Exams

Q: Typically, an antibody molecule is shaped like the letter: (ETEA 2016)

A) A

B) P

C) O

D) Y

Q: Memory cells are formed from: (ETEA 2016)

A) Monocytes

B) Neutrophils

C) Lymphocytes

D) Plasma cells

Q: For defense against viral attack, the body produces: (ETEA 2018)

A) Histamines

B) Antigens

C) Antibodies

D) Interferons

Q: Which of the following is not part of the first line of defense? (ETEA 2018)

A) Sebum

B) Perspiration

C) Interferon

D) Epidermis

Q: An autoimmune disorder in which stiffness and inflammation of vertebrae occurs is called: (ETEA 2018)

A) Lupus

B) Scleroderma

C) Ankylosing spondylitis

D) Juvenile dermatomyositis

Q: Cells which kill those displaying foreign material on their surface are: (ETEA 2019)

A) Platelets

B) Cytotoxic T-cells

C) Antigens

D) Red blood cells

Q: The form of immunity which is inherited from the mother is: (ETEA 2019)

A) Active immunity

B) Passive immunity

C) Acquired immunity

D) Innate immunity

Q: Antibodies consist of how many polypeptide chains? (ETEA 2019)

A) 2

B) 4

C) 6

D) 8

Q: Most of the oxides of non-metals combine with water to form: (2012 ETEA)

A) Hydrogen gas

B) Salt and water

C) a base

D) An acid

Q: Fajan's rule states that small highly charged ions tend to form more: (2012 ETEA)

A) Ionic compounds

B) Polymeric compounds

C) Covalent compounds

D) Coordination compounds

Q: The behavior of PbCl₂ and PbCl₄ respectively are: (2012 ETEA)

A) Ionic and covalent

B) Covalent and ionic

C) Covalent and coordinate covalent

D) Ionic and coordinate covalent

Q: Beryllium of alkaline earth metal is almost as hard as: (2012 ETEA)

A) Calcium

B) Potassium

C) Iron

D) Magnesium

Q: Beryllium, an alkaline earth metal, resists complete oxidation because: (2012 ETEA)

A) It is less reactive

B) The oxidation process is slow

C) It forms a hard protective coat of BeO

D) None of the above

Q: Which oxide of sodium metal predominantly forms in oxygen? (2012 ETEA)

A) Na₂O

B) Na₂O₂

C) Na₂O₃

D) NaO₂

Q: Select the correct statement about alkali metal hydroxides: (2012 ETEA)

A) All alkali metal hydroxides are unstable to heat

B) All alkali metal hydroxides are stable to heat except CsOH

C) All alkali metal hydroxides are stable to heat except LiOH

D) All alkali metal hydroxides are stable to heat

Q: Choose the interhalogen compound: (2012 ETEA)

A) OF₂

B) BrF₅

C) HI

D) HgBr₃

Q: In which of the following a covalent bond is not likely to exist? (2012 ETEA)

A) Br₂

B) SiF₄

C) CaO

D) CH₄

Q: The oxide of chlorine, Cl₂O₂, in nature is: (2012 ETEA)

A) Strongly basic

B) Weakly basic

C) Strongly acidic

D) Weakly acidic

Q: Select an element which exists in liquid state at room temperature: (2013 ETEA)

A) Cl₂

B) F₂

C) Br₂

D) I₂

Q: Which one will show ionic bonding? (2013 ETEA)

A) NaH

B) PbCl₂

C) HCl (gas)

D) PCl₃