A thief saw a policeman and he started running at a speed of 12 m/s. After a certain time, the policeman starts running behind the thief at a speed of 18 m/s. If the policeman covered a 540 m distance to catch the thief, the time (in seconds) after which the policeman started running is:

The speeds of three cars are in the ratio 5: 3: 4. The ratio between the time taken by these cars to cover the same distance is :

A flat worth ₹9,50,000 is sold by Lakshman to Bharath at 8% profit. If Bharath sells it back to Lakshman at 3% loss, then find the gain/loss (in ₹) of Lakshman in the entire transaction?

A man riding his bicycle covers 75 metres in 12.5 seconds. What is his speed (in km/hr)?

Study the table and answer the question, The number of girls whose height is above 125 cm is :

Height (in cm)	Number of girls
less than equal to 110	15
less than equal to 115	24
less than equal to 120	31
less than equal to 125	43
less than equal to 130	54
less than equal to 135	68

The area of a rectangular field is 396 m², whose sides are in the ratio of 11: 9. What is The perimeter of the rectangular field?

Rakesh rented out an amount to Samarth for 6 years at simple interest rate. At the end of the 6th year, Samarth paid 8/7 of the amount to Rakesh to clear out the amount. The rate of simple interest per annum was :

The following bar graph represents the annual result of five classes (VI to X) of a school. Study the bar graph carefully and

answer the question given below:

What is the average number of students in the given five classes?

If two successive discounts of 25% and 15%, respectively, are given, then what will be the net discount percentage ?

A wooden toy is in the form of a sphere with diameter 28 cm. Find the cost of polishing its surface at the rate of 50 paise per cm². (Take ∏ = 22/7)

Interkinesis is the stage between :

An autosomal recessive disease caused by point mutation is:

The male and female Ascaris respectively have:

Chlorosis (yellowing of leaves) is caused by deficiency of all except:

There are two statements marked as Assertion (A) and Reason (R). Choose the CORRECT answer. Assertion (A): Transpiration pull is theprimary force responsible for the ascent of sap in tall trees. Reason (R): It generates negative pressure in leaf xylem, pulling water upward through a continuous column.

The mangrove ecosystem inhabited by the Royal Bengal Tiger is:

Primary succession occurs in:

Which statement regarding photophosphorylation is CORRECT ?

Choose the CORRECT statement.

In which plant group is the haploid gametophytic phase dominant, vascular tissue absent, and the sporophyte nutritionally dependent on the gametophyte ?

The Red Data book keeps a record of which of the following ?

1. (i) Endemic species
2. (ii) Flowering plants
3. (iii) Endangered plants
4. (iv) Endangered animals

The first vascular plants are:

Secondary growth fails to occur in monocot stem primarily because:

Whorled phyllotaxy occurs in:

ABA-mediated stomatal closure occurs due to:

Photophosphorylation that produces only ATP but not NADPH occurs in:

Malpighian body is a part of:

Which of the following is INCORRECT about Ctenophora ?

Auxin promotes :

The most popular blood grouping is ABO grouping. O in this grouping refers to:

Identify the odd one out related to professional development of teacher.

Amphibians first appeared in period.

Find out the wrong pair from the following:

Identify the odd one out related to learner-centered features of a science textbook.

A teacher consistently using visual materials to promote teamwork and collaboration is demonstrating which competency?

The main site of light reaction in chloroplast is:

Which among the following is not a basic science process skill?

Robert M. Gagney is best known for:

There are two statements marked as Assertion (A) and Reason (R). Choose the CORRECT answer. Assertion (A): A calyx is called persistent if it remains attached to the fruit. Reason (R): Persistent calyx is characteristic of plants with epigynous flowers. (A) (B) (C) (D)

The primary purpose of using audio visual aids in classroom instruction is:

Which of the following promotes science learning beyond the classroom instruction?

A teacher designs a lesson on climate change by integrating concepts from Science, Geography, Social studies and Economics. This approach of teaching is known as:

Which of the following is NOT the scope of experiential learning ?

Learning that occurs when a child is assisted by a more knowledgeable other takes place in the:

Students plan and conduct a science project to address water scarcity in their locality. This activity promotes which level of learning ?

Identify the assumptions of the Behaviourist approach in teaching physical science:

1. Learning is a change in observable behaviour
2. Reinforcement strengthens learning
3. Emotions are the central focus of learning
4. Learning occurs mainly through cognitive restructuring

A teacher wishes to apply the problem solving strategy to help students understand various ways to conserve energy in a school, the first step of problem solving strategy will be:

Identify the odd one from the following:

Comprehensive evaluation means:

In problem solving, putting aside the problem and doing something else to allow the mind to unconsciously consider the problem is termed as