| Secretion of less saliva in mouth will effect the conversion of |
| The formation of magnesium oxide is correctly shown in option |
| The metals obtained from their molten chlorides |
| Reaction between two elements A and B, forms a compound C. |
| Dilute hydrochloric acid reacts with sodium hydroxide |
| The following table shows the pH values of four solutions |
| The products formed when Aluminium and Magnesium |
| Electrolysis of water is a decomposition reaction |
| The industrial process used for the manufacture of caustic soda |
| The colour of clear sky from the earth appears blue |
| A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen |
| How is sodium hydroxide manufactured in industries |
| A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers |
| Dry hydrogen chloride gas does not change the colour of dry litmus paper |
| Study Mendel’s cross between two plants with a pair of contrasting characters |
| Two V - I graphs A and B for series and parallel combinations |
| Why should an ammeter have low resistance |
| How is electric current related to the potential difference |
| What is vegetative propagation |
| Write an equation showing saponification |
| What happens when ethanol is heated at 443 K |
| Why is glacial acetic acid called so |
| What happens when a small piece of sodium is dropped |
| Differentiate between saturated and unsaturated carbon compounds |
| How are structure (i) and structure (ii) given below related to one another |
| Draw the structure of the following compounds |
| Why is the separation of the right side and the left side of the heart useful |
| Name the salt formed when sulphuric acid |
| Write one difference between biodegradable and non-biodegradable |
| For the current carrying solenoid as shown, draw magnetic field lines |
| How does an electric fuse prevent the electric circuit |
| How is the type of current used in household supply different |
| Why is an alternating current (A.C.) considered to be advantageous |
| What is double circulation |
| List the role of each of the following in our digestive system |
| How does Paramecium obtain its food |
| Dry HCl gas does not change the colour of dry blue litmus paper |
| Suggest a safe procedure of diluting a strong concentrated acid |
| What is observed when silver chloride is exposed to sunlight |
| While electrolysing water before passing the current some drops of an acid |
| Use of several pesticides which results in excessive accumulation |
| Identify the defect of vision shown |
| Two green plants are kept separately in oxygen free containers |
| Write one specific function each of the following organs in relation |
| Where are auxins synthesized in a plant |
| Name the part of brain which is responsible for the following actions |
| An alpha particle enters a uniform magnetic field as shown |
| The resistance of a resistor is reduced to half of its initial value |
| The correct pattern of magnetic field lines of the field |
| Two LED bulbs of 12W and 6W are connected in series |