Which of the following joints is immovable?

The delicate internal organ which is not protected by the ribcage is

Which of the following organisms does not have both muscles and skeleton for movement?

Knee joints are

Snail moves with the help of its

Which one of the following is the characteristics of birds?

Human skeleton comprises

How many muscles work together to move a bone?

In cockroaches, the body parts helping in movement are 

The organ that protects the main nerve cord is

Which of the following statements is not true?

Which type of the following materials is used for making the front glass (wind screen) of a car?

Which pair of substances among the following would float in a tumbler half-filled with water?

While doing an activity in class, the teacher asked Paheli to handover a translucent material. Which among the following materials will Paheli pick and give her teacher?

Boojho found a bag containing the following materials.
(i) Mirror
(ii) Paper stained with oil
(iii) Magnet
(iv) Glass spectacles
Help Boojho in finding out the material(s) which is/are opaque.

An iron nail is kept in each of the following liquids. In which case would it lose its shine and appear dull?

Four mixtures are given below:
(i) Kidney beans and chickpeas
(ii) Pulses and rice
(iii) Rice flakes and corn
(iv) Potato wafers and biscuits
Which of these can be separated by the method of winnowing?

Which amongst the following methods would be most appropriate to separate grains from bundles of stalks?

Which of the following mixtures would you be able to separate using the method of filtration?

Boojho's grandmother is suffering from diabetes. Her doctor advised her to take 'Iassi' with less fat content. Which of the following methods would be most appropriate for Boojho to prepare it?