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The junction between the axon of one neuron and dentrite of the next is called
Hormone secreted by thyroid gland is
A. Thyroxin
B. Calcitonin
C. Adrenaline
D. Insulin
Which centre regulates swallowing, coughing and vomiting?
Which Plant hormone essential for cell division ?
Which of the following is caused by vitamin D deficiency?
Which of the following performs dual functions i.e. both exocrine and endocrine functions?
Which hormone cause uterine contraction that leads to labour pain?
Which of the following is a vector quantity?
A commutator changes the direction of current in the coil of
The magnetic field at a point due to current carrying conductor is directly proportional to
A. Current flowing through the conductor
B. Distance of the conductor
C. Resistance of the conductor
D. None of the above
Which of the following organs in the human body where the magnetic field produced is significant?
Who first detected the presence of magnetic field in earth?
The magnetic field lines due to straight wire carrying a current are-
Which of the following is incorrect?
A. Another name of field lines is lines of space
B. Neutral wire is always at zero potential
C. Heat loss in DC is less than AC
D. Electric fuse is a current generating device
‘An electric current always produces a magnetic field’ , The above statement is
An electric fuse can prevent accidents arising from-
What is the colour of phenolphthalein in soap solution?
The basic nature of sodium hydroxide (NaOH) is due to the presence of ____________ in solution.
Ayush and Ishoo were given one test tube each. One of the test tube contained water and the other contained a solution of sodium hydroxide. They were asked to identify the test tube containing NaOH solution. Which one of the following can be used for correctly identifying the required test tube?
Which of the following properties are shown by dilute hydrochloric acid-
A. It turns blue litmus red
B. It turns red litmus blue
C. It reacts with zinc metal and a gas evolves
D. It reacts with solid sodium carbonate to give brisk effervescence
Which one of the following types of medicines is used for treating acidity?
You are provided with a sample and a strip of red litmus paper. How would you confirm the nature of the sample ?
Sodium carbonate
A. is a transparent crystalline white solid
B. Has the chemical formula Na2CO3.10H2O
C. Gives acidic solution when dissolves in water
D. Prepared by reacting with chlorine
A, B, C, D are samples of liquids having pH values of 14, 7, 1, 5 respectively. Which of these could be that of 1 M NaOH solution?
A bud of petunias become reddish purple after first shower of rain because