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General Science

Description: General Science
Number of Questions: 25
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Tags: General Knowledge General Biology Branches of Science Chemistry Circle
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CO is a more harmful pollutant because it ______.

  1. has more affinity for haemoglobin

  2. reacts quickly with UV radiations

  3. has less affinity for Hb

  4. causes ozone depletion


Correct Option: A

The largest corpuscle of blood is ______.

  1. basophil

  2. acidophil

  3. monocyte

  4. lymphocyte


Correct Option: C

In open vascular system, the circulating fluid is called _____.

  1. perilymph

  2. lymphatic fluid

  3. hemolymph

  4. blood


Correct Option: C

Adrenaline directly affects ______.

  1. islet of langerhans

  2. sinoatrial node

  3. oxyntic cells of stomach

  4. dorsal root ganglia of spinal cord


Correct Option: B

Anticoagulant of fresh water leech is ______.

  1. hirudin

  2. heparin

  3. sodium citrate

  4. chelating agent


Correct Option: A

Pulse pressure is ______.

  1. systolic pressure

  2. diastolic pressure

  3. systolic pressure and diastolic pressure

  4. the difference between systolic pressure and diastolic pressure


Correct Option: D

In high altitude, the ______.

  1. number of RBC increases

  2. size of RBC increases

  3. number of RBC decreases

  4. size of RBC decreases


Correct Option: A

The circulation of blood was discovered by ______.

  1. Darwin

  2. Aristotle

  3. Harvey

  4. Lister


Correct Option: C

Oxyhaemoglobin is dissociated into oxygen and deoxyhaemoglobin due to _______.

  1. excess of O2 pressure in tissues

  2. lack of O2 pressure in tissues

  3. lack of O2 pressure in blood

  4. lack of CO2 pressure in blood


Correct Option: B

CO is transported mainly as ______.

  1. bicarbonates dissolved in plasma

  2. bicarbonates carried by white blood cells

  3. carbonic acid in plasma

  4. carbonic acid in RBC


Correct Option: A

Pulmonary vein carries oxygenated blood from _____.

  1. lungs to heart

  2. all parts of the body

  3. heart to lungs

  4. none of these


Correct Option: A

Which factor(s) present on the surfaces of RBC is/are related to heredity?

  1. Blood groups

  2. Hb

  3. Antigens

  4. Antibodies


Correct Option: C

Erythroblastosis foetal occurs _____.

  1. when the mother is Rh positive and the child is Rh negative

  2. when the father and child are both Rh negative, but the mother is Rh positive

  3. when the mother and child are both Rh positive, but the father is Rh negative

  4. when the mother is Rh negative and the child is Rh positive


Correct Option: D

Purkinje fibres are present ______.

  1. in ventricles

  2. in auricles

  3. in striated muscle fibres

  4. throughout the heart


Correct Option: A

Which of the following is an element?

  1. Ruby

  2. Sapphire

  3. Emerald

  4. Diamond


Correct Option: D

Due to which of the following properties is the wood charcoal used in sugar industry?

  1. Because it is reducing agent

  2. Because it absorbs poisonous gases

  3. Because it acts as decolouring agent

  4. All of these


Correct Option: C

Galvanised iron sheets have a coating of ______.

  1. tin

  2. lead

  3. zinc

  4. chromium


Correct Option: C

Which of the following is not an isotope of hydrogen?

  1. Protium

  2. Yttrium

  3. Deuterium

  4. Tritium


Correct Option: B

Carborundum is ____.

  1. silicon dioxide

  2. silicon carbide

  3. silicon nitride

  4. silicon phosphide


Correct Option: B

The metal that is present in photo films is ____.

  1. mercury

  2. platinum

  3. magnesium

  4. silver


Correct Option: D

Permanent hardness of water due to the presence of metal sulphates can be removed by the use of ____.

  1. nitrates

  2. zeolite

  3. sulphonates

  4. none of these


Correct Option: B

Which of the following is used as a lubricant?

  1. Graphite

  2. Silica

  3. Diamond

  4. Iron oxide


Correct Option: A

Two or more forms of a chemical element having different physical properties, but rising to identical chemical compounds are called _____.

  1. allotropes

  2. isotopes

  3. isomers

  4. isotones


Correct Option: A

When a cart is pulled by a horse, the force that causes the horse to move forward is _____.

  1. the force that the horse exerts on the ground

  2. the force that the cart exerts on the horse

  3. the force that the ground exerts on the horse

  4. the force that the horse exerts on the cart


Correct Option: C

Carbon, diamond and graphite are together called _____.

  1. isomers

  2. allotropes

  3. isotones

  4. isotopes


Correct Option: B
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