906. Eustachian tube connects which parts of the body?Ear&throat
907. Number of molecules contained in one mole of a gas is called .
Avogadro number
908. Which acid is usually present in the fizzy soft drinks?
Carbonic acid
909. Which property of a star is indicated by its colour?
Temperature
910. Which metal is used in the storage batteries?
Lead
911. Who invented the ultrasound scanning?
Ian Donald
912. In the process of dialysis, used on kidney patients, the phenomenon involved is .
Osmosis
913. Which is the longest key in a computer keyboard?
Space bar
914. Which part of brain controls the heart beats?
Medulla Oblongata
915. Which gas is used for the artificial ripening of fruits?
Ethylene
916. Which organ of body purifies blood?
Kidney
917. Which microorganisms cause the foot & mouth disease in animals?
Virus
918. The radio active disintegration of uranium ultimately leads to .
Lead
919. Which gas is used in the welding industry?
Acetylene
920. What is the use of a commutator?
To change the direction of electric current
921. Which is known as 'the stress hormone' in plants?
Abscisic acid
922. What are the examples for the day neutral plants?
Tomato & cotton
923. Which plant hormone is found in the leaves & fruits?
Abscisic acid
924. The biological nitrogen fixation occurs in roots of leguminous plants with a symbiotic association with -------------- bacteria?
Rhizobium bacteria
925. The plants that make their own food by the mechanism of photosynthesis is known in which name?
Autotrophs
926. Few plants, specially fungi, cannot make their own food & depends on others. They are called as ---------------
Heterotrophs
927. Which macro nutrient is essential for the enzyme activation, water balance, ion balance & stomatal opening in plants?
Potassium
928. Malacophily is the pollination by --------------- in plants?
Snails
929. The pollination by ants in plants is known as -------------
Myrmecophily
930. Which part of flower develop as pericarp of fruit after fertilisation?
ovary
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