With reference to pH value, consider the following statements.
1. Higher the hydronium Ion concentration, lower is the pH value.
2. Our body works within the pH range of 6.8 to 7.0.
Choose the incorrect statement using the code given below.

With reference to metals, consider the following statement.
1. When a base reacts with a metal, hydrogen gas is evolved and a corresponding salt is formed.
2. When an acid reacts with a metal, along with the evolution of hydrogen gas a salt is formed which has a negative ion composed of the metal and oxygen.
Choose the correct statement using the code given below.

Chips manufacturers usually flush bags of chips with gas such as nitrogen to prevent chips from getting oxidized. The process of oxidation of fats and oils called

What is/are the process by which rusting can be prevented?
1. Galvanizing
2. Oil coating of iron
3. Bluing
4. Dry coating
Choose the correct answer using the code given below.

Choose the process by which liquid hydrocarbons can be converted to gaseous hydrocarbons

With reference to ethanol fuel, consider the following statement.
1. Ethanol can be combined with petrol in any concentration up to pure ethanol (E100).
2. Ethanol helps prevent wintertime problems by acting as a gas-line antifreeze.
3. Ethanol-blended fuel keeps the fuel emissions clean for optimal performance, but it leaves gummy deposits on engine.
Choose the correct statement using the code given below.

Which of the following is chemical properties of metal?
1. Metals easily corrodible.
2. Metal form basic oxides.
3. Metals have low electronegativity.
4.Metals and Mouldable and Ductile
Choose the correct code given below.

Which of the following organism are not autotrophs?
1. Cyanobacteria
2. Fungi
3. Algae
Choose the correct answer using the code given below

Consider the following statement, during the process of photosynthesis.
1. Absorption of light energy by chloroplast.
2. Water used in photosynthesis is taken up from the atmosphere by leaves.
Choose the incorrect statement using the code given below.

With reference to blood pressure, consider the following statement.
1. The pressure of blood in arteries is much greater than in veins.
2. The normal systolic pressure is about 120mm of Hg and diastolic pressure is 80mm of Hg.
Choose the incorrect statement using the code given below.

Which of the following completely digested in small intestine?
1. Carbohydrates
2. Vitamins
3. Proteins
4. Fats
Choose the correct code:

Consider the following statement about transportation in plant.
1. Xylem is responsible for the transportation of water and minerals obtained from the soil in the plant.
2. Phloem transports the product of photosynthesis from the leaves to other parts of the plant.
Which of the above statement is incorrect, choose the answer using the code given below?

Which of the following is correctly matched?
1. Cytokinins – Promote cell division
2. Auxin – Helps the cells to growth
3. Gibberellins – Inhibits growth
4. Abscisic acid – Helps in stem growth
Choose the correct answer using the code given below.

Which of the following is/are correctly matched?
1. Thyroxine – Metabolism of Carbohydrates
2. Adrenaline – Control salt and water balance
3. Melatonin – Metabolism of fats
4. Glucagon – decrease sugar level in blood
Choose the correct answer using the code given below.

Which of the following statement is correct about ecological niche?
1. Ecological niche involve only the habitat, where an organism live.
2. Organism can change their niche according to the changing environment.
Choose the correct answer using the code given below.

In which part of the female reproductive system, fertilization occurs?