उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

According to the kinetic molecular theory, how do gas particles move?

1. AConstantly, randomly and in straight lines between collisions
2. BOnly when heated, and then in neat lines between the walls
3. CSlowly in fixed positions
4. DAlways in a single direction, set by the pull of gravity

What are the usual units of molar mass?

1. Ag/mol
2. Bg/L
3. Cmol/L
4. Dmol/g

Between which kinds of elements do ionic bonds usually form?

1. ATwo nonmetals
2. BTwo identical metals
3. CA metal and a nonmetal
4. DTwo noble gases

A room is at 25 °C. What is this temperature in kelvin?

1. A77 K
2. B298 K
3. C−248 K
4. D248 K

Which nuclear process powers the Sun?

1. AFission of uranium into smaller nuclei
2. BCombustion of hydrogen gas with oxygen in its core
3. CAlpha decay of helium
4. DFusion of hydrogen nuclei to form helium

NaCl जैसे आयनिक यौगिकों का कौन-सा गुण विशिष्ट है?

1. Aउच्च गलनांक; घुलने पर वे विद्युत का संचालन करते हैं
2. Bनिम्न गलनांक और कमरे के तापमान पर गैस होना
3. Cधातुओं की तरह मुलायम और आसानी से मुड़ने वाला होना
4. Dशुष्क ठोस रूप में विद्युत का संचालन करना

Which phrase best describes a 0.001 M solution of hydrochloric acid?

1. AA concentrated solution of a strong acid
2. BA dilute solution of a weak acid
3. CA concentrated solution of a weak acid
4. DA dilute solution of a strong acid

A compound has the empirical formula CH₂ and a molar mass of 42 g/mol (C = 12, H = 1). What is its molecular formula?

1. AC₄H₈
2. BC₂H₄
3. CCH₂
4. DC₃H₆