In humans, what does the normal systolic and diastolic blood pressure mean?
The normal systolic pressure is about 120 mm of Hg and diastolic pressure is 80 mm of Hg.
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Name the gas evolved when HCl acid is added to zinc metal.
Hydrogen gas gets evolved when HCl acid is added to zinc metal. Zn + 2HCl †’ ZnCl2 + H2
Metal having low melting point such as tin can be purified by
The low melting metals can be separated from high melting metals by liquation process.
Give an example of a chemical reaction in which tremendous amount of heat is released.
Sodium reacts explosively with water resulting in evolution of a large amount of heat.
In many unicellular organisms waste products are removed by the process of:
In many unicellular organisms waste products are removed by the process of diffusion.
Name the attacking reagent in Friedel crafts alkylation and acylation.
In Friedel crafts alkylation and acylation the attacking reagent is an Electrophile.
Mendel conducted his experiments on which plant to study the mechanism of inheritance.
Mendel conducted his experiments on pea plant to study the mechanism of inheritance.
Name the instrument used to control current in an electric circuit
The instrument which is used to control current in an electric circuit is rheostat.
Name the process of separation of mixture into a column of adsorbent.
Separation of mixture into a column of adsorbent is known as Column Chromatography.
Name the metal which can be purified by distillation process ?
Distillation method is used for refining low boiling metals like Zinc and Mercury.
In emulsion what is the state of dispersed phase and dispersion medium?
In emulsion,both dispersed phase and dispersion medium are present in liquid state
What are the three elements known as that were classified by the Johann Dobereiner?
Johann Dobereiner classified elements in group of three elements called as triads.
In which forests do we find both softwood and hardwood trees?
In Temperate evergreen forests we find both the softwood as well as the hardwood.
In which case does a single cell constitute a whole organism?
The organism Chlamydomonas has only one cell and hence is a unicellular organism. The cells of most Chlamydomonas species are... View Article
What does the transparent layer covering the exposed part of the eye called as?
Transparent layer covering the exposed part of the eye is called as conjunctiva.
In the test of nitrogen the Prussian blue color formed is of:
In the test of nitrogen the Prussian blue color formed is of Ferriferrocyanide.
A block of mass 50 kg is pulled up a slope with constant speed by applying an external force of 20 kgf parallel to the slope. The block moves through a distance of 4 m along the slope.i) What is the work done by the external applied force? ii) What is the energy stored when it reaches the vertical height of 3m (g = 10m/s2)
i) W = F ´ s = (20 ´ 10) ´ 4 = 800J ii) Potential Energy = 50 ´... View Article
Reaction of granulated zinc with dil HCl results in formation of_________
Answer: The reaction of granulated zinc with dil HCl results in the formation of dihydrogen. The reaction between zinc metal and... View Article
Lower portion of brain that extends downwards into spinal cord is called:
Medulla region of hind-brain is continuous and extends into the spinal cord.
What does a slope of velocity-time graph giive?
The slope of velocity-time graph gives the acceleration, that is, a = v-u/t
