121.

Which one of the following approaches adopted by a Science teacher reflects scientific temper on her part?

• Encouraging students to ask questions in the classroom

• Preparing difficult question papers to enhance learning

• Maintaining perfect discipline in the class

• Covering the prescribed syllabus as quickly as possible

The following steps (not in the proper sequence) are generally recommended to be followed in the scientific method.

1. Testing of hypothesis
2. Formulation of hypothesis
3. Identification of problem
4. Collection of data
5. Drawing of conclusion

Which one of the following is the correct sequence of the above steps to be followed for this purpose?

• D, C, B, A, E

• B, C, A, D, E

• C, A, D, B, E

• C, B, D, A, E

Hands-on activities and projects form an integral part of the learning of Science. These learning experiences primarily aim at

• maintaining discipline in the laboratory

• providing opportunity to students for extended learning

• assessing the students on practical skills

• keeping the students engaged all the time

Study the following statements about excretory system in humans

1. Wastes dissolved in water are filtered out as urine in the kidneys.
2. Urine stored in the urinary bladder is passed out through the urinary opening at the end of the urethra.
3. The ureter carries urine to the urinary bladder.
4. Useful substances are absorbed back in the blood
5. Blood containing useful and harmful substances reaches the kidney for filtration.

The correct order of the processes given in the above statements is

• B, D, E, A, C

• E, D, A, B, C

• D, E, A, C, B

• E, D, A, C, B