Biology
Grade-8
Easy
Question
Bacillus thuringiensis is a ________.
- Water
- Hot spring
- Soil bacterium
- Space bacterium
Hint:
Bacillus thuringiensis is a soil baterium.
The correct answer is: Soil bacterium
- A Gram-positive bacteria called Bacillus thuringiensis (Bt) produces insecticidal proteins that are effective against many insect orders as well as worms.
- Some Bt strains create VIP toxins during the vegetative stage of growth, while Cry and Cyt toxins are produced during the sporulation stage.
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Amflora is a genetically modified ______.
Amflora is a genetically modified ______.
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Golden Rice is engineered to make beta-carotene which is also found in
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What event was a major factor in the appearance of GMOs?
What event was a major factor in the appearance of GMOs?
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Which one of these is NOT an advantage of genetically modified food?
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Which one of these is a genetically modified crop?
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The process in which the substance is separated through spinning at a hight speed is called
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In the distillation process, the condenser is used to
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Identify the incorrect statement/s from the following:
(i) Centrifugation is used in diagnostic laboratories for blood and urine tests.
(ii) Distillation method can be used to separate the butter from the cream.
(iii) Chromatography is useful for separating the alum from impure samples.
Identify the incorrect statement/s from the following:
(i) Centrifugation is used in diagnostic laboratories for blood and urine tests.
(ii) Distillation method can be used to separate the butter from the cream.
(iii) Chromatography is useful for separating the alum from impure samples.
ChemistryGrade-8
Chemistry
Arrange the following steps in ascending order which are involved in the distillation of alcohol.
(i) The flask is heated.
(ii) The vapors of alcohol flow into the condenser, where it gets cooled and converts into liquid again.
(iii) Mixture of alcohol and water are taken in in the distillation flask.
(iv) The remaining liquid is stored in the beaker, and water continues to remain in the flask.
(v) Monitor the temperature with the help of a thermometer.
Arrange the following steps in ascending order which are involved in the distillation of alcohol.
(i) The flask is heated.
(ii) The vapors of alcohol flow into the condenser, where it gets cooled and converts into liquid again.
(iii) Mixture of alcohol and water are taken in in the distillation flask.
(iv) The remaining liquid is stored in the beaker, and water continues to remain in the flask.
(v) Monitor the temperature with the help of a thermometer.
ChemistryGrade-8
