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#1 Class 10 Biology Control and Coordination 2026 Mcq 1M

Identify the type of tropic movement that is responsible for the movement of the pollen tube towards an ovule from the following options.

A. Hydrotropism

B. Geotropism

C. Chemotropism

D. Phototropism

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#2 Class 10 Biology How do Organisms Reproduce? 2026 Mcq 1M

Spirogyra, despite being a multi-cellular organism, still shows a simple reproductive method. Select the correct option with regard to reproduction in Spirogyra :

A. Asexual reproduction by division of cells into two cells

B. Sexual reproduction by division of cells into many cells

C. Asexual reproduction by breaking up of Spirogyra filaments into smaller parts

D. Sexual reproduction by the formation of gametes after meiosis of cells of filaments followed by fusion of male and female gametes

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#3 Class 10 Biology Life Processes 2026 Mcq 1M

The carbohydrates, which are not used immediately in plants, are stored in the form of 'a', which serves as an internal energy reserve. What does 'a' stand for ?

A. Starch

B. Sugar

C. Fat

D. Protein

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#4 Class 10 Chemistry Carbon and its Compounds 2026 Long 5M

(i) Write the structural formula of benzene. (ii) State the reason why carbon can neither form $C^{4+}$ cation nor $C^{4-}$ anion. (iii) What type of bond is formed between carbon and hydrogen ? (iv) How is ethanol co...

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#5 Class 10 Chemistry Carbon and its Compounds 2026 Long 5M

A carbon compound 'P' of molecular formula $C_2H_6O$ is found to be neutral when tested with red and blue litmus. A gas that burns with a pop sound is produced when sodium metal reacts with compound 'P'. (i) Identify ...

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#6 Class 10 Chemistry Acids, Bases and Salts 2026 Long 4M

Read the following passage and answer the questions that follow : In the given diagram, when electricity is passed through an aqueous solution of a common salt (brine), a substance 'Z' is produced, along with the evol...

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#7 Class 10 Chemistry Metals and Non-metals 2026 Short 3M

Seema took a small amount of copper powder in a china dish and heated it. What changes will she observe on heating ? When $H_2$ gas is passed over this heated substance, what visible changes will be seen in it ? Give ...

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#8 Class 10 Chemistry Chemical Reactions and Equations 2026 Short 3M

Define the following terms : (a) Corrosion (b) Rancidity (c) Double displacement reaction

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#9 Class 10 Chemistry Metals and Non-metals 2026 Short 3M

Answer the following : (a) Why can the oxides of highly reactive metals not be reduced by carbon ? (b) Why do ionic compounds have high melting and boiling points ? (c) Why is a solder, an alloy of lead and tin, used ...

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#10 Class 10 Chemistry Metals and Non-metals 2026 Short 3M

Give reasons : (i) Metal sulphides and carbonates should be converted to their metal oxides in the process of extraction of metals. (ii) Aluminium oxide is considered as an amphoteric oxide. (iii) Metals like Na, K, C...

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#11 Class 10 Chemistry Metals and Non-metals 2026 Short 3M

(i) Write one example each of one metal that is so soft that it can be cut with a knife, and one non-metal that is a good conductor of electricity. (ii) Using the electronic configuration, explain how Mg atom combines...

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#12 Class 10 Chemistry Metals and Non-metals 2026 Short 2M

Read the following passage and answer the questions that follow : One student was comparing the reactivity of different metals for his science project. He added iron filings in four test tubes A, B, C and D containing...

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#13 Class 10 Chemistry Chemical Reactions and Equations 2026 Short 2M

Answer the following : (a) Why should chemical equations be balanced ? (b) Name the oxidising and reducing agent in the following equation : $$ 4Na + O_2 \rightarrow 2Na_2O $$

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#14 Class 10 Chemistry Metals and Non-metals 2026 Short 2M

Write balanced equations for the reactions of the following : (a) Iron with steam (b) Calcium with water

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#15 Class 10 Chemistry Carbon and its Compounds 2026 Long 1M

Assertion (A) : Carbon shows the property of catenation. Reason (R) : $C - C$ bond is weak due to its small size.

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#16 Class 10 Chemistry Carbon and its Compounds 2026 Long 1M

Assertion (A) : Carbon compounds can form chains, branched and ring structures. Reason (R) : Carbon exhibits the property of catenation.

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#17 Class 10 Chemistry Carbon and its Compounds 2026 Long 1M

Assertion (A) : Carbon shows the property of catenation. Reason (R) : This is due to strong C - C bond.

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#18 Class 10 Chemistry Metals and Non-metals 2026 Mcq 1M

When Mg metal is treated with hot water, it starts floating on the surface of the water. The reason for its different behaviour is :

A. Mg is a lighter element than water.

B. Mg reacts with water to produce $H_2$ gas which helps in floating.

C. Mg reacts with water to produce $N_2$ gas which helps in floating.

D. Mg reacts with water to form $CO_2$ gas which helps in floating.

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#19 Class 10 Chemistry Metals and Non-metals 2026 Mcq 1M

A student notices that her silver jewellery turned dull and had a grey-black coating over it after wearing for a few months. What results in the change in colour of the silver metal ?

A. The polish over the jewellery was removed after wearing for a few months.

B. The jewellery comes in contact with air, moisture and acids and corrodes.

C. Dust particles over the jewellery change its colour.

D. Its colour changes due to rusting.

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#20 Class 10 Chemistry Chemical Reactions and Equations 2026 Mcq 1M

When ferrous sulphate crystals are heated in a test tube, we observe that :

A. A colourless gas with no smell is evolved.

B. A brown gas is evolved.

C. The green colour of the salt fades and a gas with the smell of burning sulphur is evolved.

D. The green colour of the salt fades and no gas is evolved.

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